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: naveen <172697+naveensrinivasan@users.noreply.github.com>

.github/workflows/update-catch.yaml

@@ -3,8 +3,14 @@ on:
   workflow_dispatch:
   schedule:
     - cron:  '0 10 1/16 * *'
+permissions:
+  contents: read
+
 jobs:
   updateCatch:
+    permissions:
+      contents: write  # for peter-evans/create-pull-request to create branch
+      pull-requests: write  # for peter-evans/create-pull-request to create a PR
     if: ${{ github.repository == 'mlpack/mlpack' }}
     runs-on: ubuntu-latest
     steps:

.github/workflows/update-cli11.yaml

@@ -3,8 +3,14 @@ on:
   workflow_dispatch:
   schedule:
     - cron:  '0 10 1/16 * *'
+permissions:
+  contents: read
+
 jobs:
   updateCLI11:
+    permissions:
+      contents: write  # for peter-evans/create-pull-request to create branch
+      pull-requests: write  # for peter-evans/create-pull-request to create a PR
     if: ${{ github.repository == 'mlpack/mlpack' }}
     runs-on: ubuntu-latest
     steps: