GH Actions: Added necessary permissions for creating PRs

Signed-off-by: Ole Herman Schumacher Elgesem <[email protected]>

Author: olehermanse

.github/workflows/black-format.yml

@@ -10,6 +10,9 @@ on:
 jobs:
   format:
     runs-on: ubuntu-24.04
+    permissions:
+      contents: write
+      pull-requests: write
     steps:
       - name: Checks-out repository
         uses: actions/checkout@v4