fix: Workflows missing permissions (#4382)

* Potential fix for code scanning alert no. 42: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* Potential fix for code scanning alert no. 2: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: Hjaf

.github/workflows/_purge_cdn.yaml

@@ -11,6 +11,7 @@ on:
 jobs:
   purge:
     name: Purge the cdn to refresh cache
+    permissions: {}
     runs-on: ubuntu-latest
     environment: ${{ inputs.environment }}
     env:

.github/workflows/_setup.yml

@@ -19,6 +19,9 @@ on:
         description: 'Package tag'
         value: ${{ jobs.variables.outputs.tag }}
 
+permissions:
+  contents: read
+
 env:
   SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}