.github: adjust perms to fix 403 for ncipollo/release-action

Should fix "Error 403: Resource not accessible by integration"

Signed-off-by: Joachim Wiberg <[email protected]>

.github/workflows/build-push.yml

@@ -73,7 +73,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       packages: write
-      contents: read
+      contents: write
     steps:
       - uses: actions/download-artifact@v4
         with: