workflows: ensure we have the bucket available for schema upload

Signed-off-by: Patrick Stephens <[email protected]>

Author: Patrick Stephens

.github/workflows/staging-build.yaml

@@ -84,6 +84,7 @@ jobs:
       - staging-build-get-meta
       - staging-build-images
     runs-on: ubuntu-latest
+    environment: staging
     steps:
       - name: Download the schema generated by call-build-images
         # We may have no schema so ignore that failure