feat(tests workflow): Downgrade permissions to contents:read (#74)

Author: julienloizelet

.github/workflows/tests.yml

@@ -19,9 +19,8 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-# This is required for "gautamkrishnar/keepalive-workflow", see "ddev/github-action-add-on-test"
 permissions:
-  actions: write
+  contents: read
 
 jobs:
   tests: