actions-rs is not supported

[szepeviktor]

Let's remove action-rs/* actions!
actions-rs/toolchain#216

Ubuntu images already contain up-to-date Rust tools.
https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md#rust-tools

[reinink]

Hey thanks for the heads up, I've gone ahead and removed this dependency in #11826 👍

[szepeviktor]

You're welcome.