ci: semverver

[camshaft]

Execute rust-semverver to ensure we maintain API compatibility.

rust-semverver is deprecated so consider the listed alternatives instead: https://github.com/rust-lang/rust-semverver?tab=readme-ov-file#deprecation-notice

Links

• https://github.com/rust-dev-tools/rust-semverver
• semverver actions-rs/meta#13

[camshaft]

This issue makes the output pretty noisy.