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/codeql-analysis.yml

@@ -9,8 +9,15 @@ on:
   schedule:
     - cron: '0 16 * * 3'
 
+permissions:
+  contents: read
+
 jobs:
   analyze:
+    permissions:
+      actions: read  # for github/codeql-action/init to get workflow details
+      contents: read  # for actions/checkout to fetch code
+      security-events: write  # for github/codeql-action/autobuild to send a status report
     name: Analyze
     runs-on: ubuntu-latest
 

.github/workflows/dockerimage.yml

@@ -5,6 +5,9 @@ on:
     branches:
       - master
 
+permissions:
+  contents: read
+
 jobs:
 
   build:

.github/workflows/release.yml

@@ -5,8 +5,13 @@ on:
     branches:
       - master
 
+permissions:
+  contents: read
+
 jobs:
   release:
+    permissions:
+      contents: write  # for helm/chart-releaser-action to push chart release and create a release
     runs-on: ubuntu-latest
     steps:
       - name: Checkout