c44d361828
* CI: update to checkout@v4 action Not sure why they decided to bump a major version. It seems like this is unnecessary churn: https://github.com/actions/checkout/pull/1436#issuecomment-1737711301 * CI: replace archived `actions-rs/toolchain` It's been unmaintained for four years and has been throwing warnings in CI: > The `set-output` command is deprecated and will be disabled soon. * CI: Bump `cargo-install` action. This should fix the remaining warnings in CI? * CI: mdbook-linkcheck: workaround for build error