Set permissions for GitHub actions

Restrict the GitHub token permissions only to the required ones; this way, even if the attackers will succeed in compromising your workflow, they won’t be able to do much.

- Included permissions for the action. https://github.com/ossf/scorecard/blob/main/docs/checks.md#token-permissions

https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions

https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs

[Keeping your GitHub Actions and workflows secure Part 1: Preventing pwn requests](https://securitylab.github.com/research/github-actions-preventing-pwn-requests/)

Signed-off-by: naveensrinivasan <172697+naveensrinivasan@users.noreply.github.com>

.github/workflows/build-dist.yaml

@@ -10,10 +10,15 @@ on:
   workflow_dispatch:
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: read
+
 jobs:
   # This workflow contains a single job called "build"
   build:
     # The type of runner that the job will run on
+    permissions:
+      contents: write  # for stefanzweifel/git-auto-commit-action to push code in repo
     runs-on: ubuntu-latest
 
     # Steps represent a sequence of tasks that will be executed as part of the job

.github/workflows/publish.yaml

@@ -5,8 +5,13 @@ on:
     tags:
     - 'v*'
 
+permissions:
+  contents: read
+
 jobs:
   build:
+    permissions:
+      contents: write  # for actions/create-release to create a release
     name: Upload Release Asset
     runs-on: ubuntu-latest
     steps:

.github/workflows/test.yaml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest