Verify additional Mendix patch versions in a crate's versions.yaml

[hjonck]

Each crate is verified against one Mendix patch today. It would help users to verify more patch versions per major (they bake into the same image as extra /opt/mendix/runtimes/<version>/ subdirs).

How

1. Pick a crate (e.g. crates/mendix-11) and a patch version available on the CDN.
2. docker build --build-arg MENDIX_VERSION=<version> ..., then tests/smoke-test.sh <unzipped-mda>.
3. If it serves HTTP 200, add the version to the crate's versions.yaml supported: list with the app you verified against.

Great first issue — the process is fully scripted. See CONTRIBUTING.md.