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: nathannaveen <42319948+nathannaveen@users.noreply.github.com>

.github/workflows/benchmark.yml

@@ -6,6 +6,9 @@ on:
   schedule:
   - cron: '15 4 * * *'
 
+permissions:
+  contents: read
+
 jobs:
   # Run our nightly builds.  We build a matrix with the various build
   # targets and their details.  Then we build either in a docker container

.github/workflows/codeql.yml

@@ -8,8 +8,15 @@ on:
 env:
   docker-registry: ghcr.io
 
+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/analyze to upload SARIF results
     name: Analyze
     runs-on: ubuntu-latest
 

.github/workflows/nightly.yml

@@ -10,6 +10,9 @@ env:
   docker-registry: ghcr.io
   docker-config-path: source/ci/docker
 
+permissions:
+  contents: read
+
 jobs:
   # Run our nightly builds.  We build a matrix with the various build
   # targets and their details.  Then we build either in a docker container