Use cargo-semver-checks-action

[mgr0dzicki]

Hi! As one of the contributors of cargo-semver-checks I'd want to say we're pleased to see you're using our tool!

Since we've recently released a new, completely rebuilt version of the GitHub action, you can now use it instead of installing cargo-semver-checks manually in CI. One of the key features of the new action is caching the baseline rustdoc between the runs. This will make Semver Checks job almost twice as fast on second and each subsequent run (2m 36s vs 4m 8s on my fork).

Setting rust-toolchain: manual means the action will use nightly as specified in rust-toolchain.toml instead of the default stable.

[phil-opp]

Nice, thanks a lot!