Set permissions for GitHub actions

- 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/)

 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.

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

.github/workflows/changelog.yml

@@ -10,6 +10,9 @@ on:
     branches:
       - develop
 
+permissions:
+  contents: read
+
 jobs:
   changelog:
     runs-on: ubuntu-latest

.github/workflows/golangci-lint.yml

@@ -11,8 +11,14 @@ on:
     paths:
       - "**/*.go"
       - ".github/workflows/golangci-lint.yml"
+permissions:
+  contents: read
+
 jobs:
   lint:
+    permissions:
+      contents: read  # for actions/checkout to fetch code
+      pull-requests: read  # for golangci/golangci-lint-action to fetch pull requests
     runs-on: ubuntu-latest
     steps:
       - name: Checkout codebase

.github/workflows/stale.yml

@@ -4,9 +4,15 @@ on:
   schedule:
     - cron: "30 1 * * *"
 
+permissions:
+  contents: read
+
 jobs:
   stale:
 
+    permissions:
+      issues: write  # for actions/stale to close stale issues
+      pull-requests: write  # for actions/stale to close stale PRs
     runs-on: ubuntu-latest
 
     steps:

.github/workflows/test.yml

@@ -20,6 +20,9 @@ on:
       - "go.sum"
       - ".github/workflows/test.yml"
 
+permissions:
+  contents: read
+
 jobs:
   test:
     strategy: