chore(deps): update dependency toolbox-llamaindex to v0.5.1 (#1510)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
|
[toolbox-llamaindex](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python)
([changelog](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/blob/main/packages/toolbox-llamaindex/CHANGELOG.md))
| `==0.5.0` -> `==0.5.1` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/toolbox-llamaindex/0.5.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/toolbox-llamaindex/0.5.0/0.5.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>googleapis/mcp-toolbox-sdk-python
(toolbox-llamaindex)</summary>

###
[`v0.5.1`](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/releases/tag/toolbox-core-v0.5.1):
toolbox-core: v0.5.1

[Compare
Source](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-llamaindex-v0.5.0...toolbox-llamaindex-v0.5.1)

##### Bug Fixes

- **toolbox-core:** Use typing.Annotated for reliable parameter
descriptions instead of docstrings
([#&#8203;371](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/issues/371))
([eb76680](eb76680d24))

##### Documentation

- Update langgraph sample in toolbox-core
([#&#8203;366](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/issues/366))
([fe35082](fe35082104))

##### Miscellaneous Chores

- Remove redundant test for
test\_add\_auth\_token\_getter\_unused\_token
([#&#8203;347](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/issues/347))
([dccaf1b](dccaf1bd70))
- Remove duplicate header check during initialization
([#&#8203;357](https://redirect.github.com/googleapis/mcp-toolbox-sdk-python/issues/357))
([888170b](888170b3c3))

</details>

---

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are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---

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---

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Co-authored-by: Harsh Jha <83023263+rapid-killer-9@users.noreply.github.com>

docs/en/getting-started/quickstart/python/llamaindex/requirements.txt

@@ -1,4 +1,4 @@
 llama-index==0.14.2
 llama-index-llms-google-genai==0.5.0
-toolbox-llamaindex==0.5.0
+toolbox-llamaindex==0.5.1
 pytest==8.4.2