use PAT

.forgejo/workflows/image.yaml

@@ -16,7 +16,7 @@ jobs:
         with:
           registry: git.hamburg.ccc.de
           username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          password: ${{ secrets.REPO_TOKEN }}
       - uses: https://github.com/int128/kaniko-action@v1
         with:
           push: true