chore: 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: neilnaveen <42328488+neilnaveen@users.noreply.github.com>

.github/workflows/ci.yml

@@ -1,5 +1,8 @@
 name: CI
 on: [push, pull_request]
+permissions:
+  contents: read
+
 jobs:
   test:
     name: Test

.github/workflows/codeql.yml

@@ -1,13 +1,14 @@
 name: CodeQL
 on: [push, pull_request]
+permissions:
+  contents: read
+
 jobs:
   analyze:
     name: Analyze
     runs-on: ubuntu-latest
 
     permissions:
-      actions: read
-      contents: read
       security-events: write
 
     strategy: