chore(deps): Update cbindgen requirement from 0.27 to 0.28 (#815)

Updates the requirements on
[cbindgen](https://github.com/mozilla/cbindgen) to permit the latest
version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/mozilla/cbindgen/releases">cbindgen's
releases</a>.</em></p>
<blockquote>
<h1>0.28.0</h1>
<ul>
<li>Parse unsafe attributes in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1020">mozilla/cbindgen#1020</a></li>
<li>Fix local override of enum prefix-with-name by jsgf in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1006">mozilla/cbindgen#1006</a></li>
<li>Add rename-all=prefix in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1021">mozilla/cbindgen#1021</a></li>
<li>ir: add support for UnsafeCell and SyncUnsafeCell by alekitto in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1003">mozilla/cbindgen#1003</a></li>
<li>Implement mangling for arrays in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1022">mozilla/cbindgen#1022</a></li>
<li>Fix: Ignore <code>CARGO_BUILD_TARGET</code> in tests by bryango in
<a
href="https://redirect.github.com/mozilla/cbindgen/pull/1010">mozilla/cbindgen#1010</a></li>
<li>Newline for each field for constexpr field constants by youknowone
in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/988">mozilla/cbindgen#988</a></li>
<li>Fix clippy warnings by youknowone in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1026">mozilla/cbindgen#1026</a></li>
<li>Add aarch64/arm64 to CI by NickeZ in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1036">mozilla/cbindgen#1036</a></li>
<li>Add <code>unstable_ir</code> feature flag that makes the ir pub by
heesooy in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/1011">mozilla/cbindgen#1011</a></li>
<li>Support generated a symbols file by TheElectronWill in <a
href="https://redirect.github.com/mozilla/cbindgen/pull/916">mozilla/cbindgen#916</a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/mozilla/cbindgen/blob/master/CHANGES">cbindgen's
changelog</a>.</em></p>
<blockquote>
<h1>0.28.0</h1>
<pre><code> * Parse unsafe attributes in
https://github.com/mozilla/cbindgen/pull/1020
* Fix local override of enum prefix-with-name by jsgf in
https://github.com/mozilla/cbindgen/pull/1006
* Add rename-all=prefix in https://github.com/mozilla/cbindgen/pull/1021
* ir: add support for UnsafeCell and SyncUnsafeCell by alekitto in
https://github.com/mozilla/cbindgen/pull/1003
* Implement mangling for arrays in
https://github.com/mozilla/cbindgen/pull/1022
* Fix: Ignore `CARGO_BUILD_TARGET` in tests by bryango in
https://github.com/mozilla/cbindgen/pull/1010
* Newline for each field for constexpr field constants by youknowone in
https://github.com/mozilla/cbindgen/pull/988
* Fix clippy warnings by youknowone in
https://github.com/mozilla/cbindgen/pull/1026
* Add aarch64/arm64 to CI by NickeZ in
https://github.com/mozilla/cbindgen/pull/1036
* Add `unstable_ir` feature flag that makes the ir pub by heesooy in
https://github.com/mozilla/cbindgen/pull/1011
* Support generated a symbols file by TheElectronWill in
https://github.com/mozilla/cbindgen/pull/916
</code></pre>
<h1>0.27.0</h1>
<pre><code>  * Revert: The `Config` struct now has a private member.
* Allow users to specify a crate version for bindings generation
([#901](https://github.com/mozilla/cbindgen/issues/901)).
* Update MSRV to 1.74
([#912](https://github.com/mozilla/cbindgen/issues/912),
[#987](https://github.com/mozilla/cbindgen/issues/987)).
* Support #[deprecated] on enum variants
([#933](https://github.com/mozilla/cbindgen/issues/933)).
* Support integrating the package_version information in a header file
comment ([#939](https://github.com/mozilla/cbindgen/issues/939)).
* Add a language backend
([#942](https://github.com/mozilla/cbindgen/issues/942)).
* Support generics with defaulted args
([#959](https://github.com/mozilla/cbindgen/issues/959)).
* Add `VaList` compatibility
([#970](https://github.com/mozilla/cbindgen/issues/970)).
</code></pre>
<h1>0.26.0</h1>
<pre><code>  * Fix swapping of `&gt;&gt;=` and `&lt;&lt;=` in constants.
* Add support for #[deprecated]
([#860](https://github.com/mozilla/cbindgen/issues/860)).
  * Built-in support for bitflags 2.0.
  * Support for &quot;C-unwind&quot; ABI.
* Generate bindings for non-public extern items if they are
#[no_mangle].
</code></pre>
<h2>0.25.0</h2>
<pre><code>  * Re-release of yanked 0.24.6 as a major release
  * Update MSRV to 1.57
* Support variadic arguments (`...`)
([#805](https://github.com/mozilla/cbindgen/issues/805))
* Add --depfile option
([#820](https://github.com/mozilla/cbindgen/issues/820))
  * Breaking changes: The `Config` struct now has a private member.
</code></pre>
<h2>0.24.6 (YANKED: depfile option was breaking, see <a
href="https://redirect.github.com/mozilla/cbindgen/issues/841">#841</a>)</h2>
<pre><code>  * Update MSRV to 1.57
* Support variadic arguments (`...`)
([#805](https://github.com/mozilla/cbindgen/issues/805))
* Add --depfile option
([#820](https://github.com/mozilla/cbindgen/issues/820))
</code></pre>
<h2>0.24.5</h2>
<pre><code>  * Don't enforce tempfile version.
</code></pre>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="bd78bbe59b"><code>bd78bbe</code></a>
Release 0.28.0</li>
<li><a
href="8ca9c4c20f"><code>8ca9c4c</code></a>
tests: Fix symbol file and tests.</li>
<li><a
href="152f91dee0"><code>152f91d</code></a>
Appease clippy.</li>
<li><a
href="70b9d7a980"><code>70b9d7a</code></a>
tests: Run rustfmt.</li>
<li><a
href="87afbf9e01"><code>87afbf9</code></a>
Add a way to generate a list of symbols for dynamic linkage, resolves <a
href="https://redirect.github.com/mozilla/cbindgen/issues/907">#907</a></li>
<li><a
href="80c50c643a"><code>80c50c6</code></a>
Add <code>unstable_ir</code> feature flag that makes the ir pub</li>
<li><a
href="e82815e99a"><code>e82815e</code></a>
Refactor arm64 build to matrix strategy</li>
<li><a
href="a5e1443a45"><code>a5e1443</code></a>
Add aarch64/arm64 to CI</li>
<li><a
href="b9b8f8878a"><code>b9b8f88</code></a>
Fix clippy warnings</li>
<li><a
href="89a9faa97c"><code>89a9faa</code></a>
newlines for constexpr</li>
<li>Additional commits viewable in <a
href="https://github.com/mozilla/cbindgen/compare/v0.27.0...0.28.0">compare
view</a></li>
</ul>
</details>
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runtime/Cargo.toml

@@ -34,7 +34,7 @@ register-filesystem = [] # enables wasm to be loaded from disk
 http = ["ureq"]          # enables extism_http_request
 
 [build-dependencies]
-cbindgen = { version = "0.27", default-features = false }
+cbindgen = { version = "0.28", default-features = false }
 
 [dev-dependencies]
 criterion = "0.5.1"