The maintainer (Brian Madison) removed these fields from all workflow
files in two commits:
- f699a368: removed `standalone: true` from all workflow.yaml files
- 731bee26: removed `web_bundle: false` from all workflow.yaml files
These fields are no longer part of the workflow.yaml format. Update
the schema to match upstream and remove related test fixtures.
24/24 tests passing. 9/9 workflow files valid.
f1bfee1be3