v2.0.3

What's Changed

• images: build protoc-gen-go-grpc for the image's architecture; smoke test checks plugin architecture (#6, backport) by @jodydadescott in #14
• [2.0] mcp: synthesize a defined value for assert_enum_defined in the generated gate (#4) by @jodydadescott in #16

Full Changelog: v2.0.2...v2.0.3