chore: update actions-rust-lang/setup-rust-toolchain action to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions-rust-lang/setup-rust-toolchain	action	major	v1.17.0 → v2.0.0

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Release Notes

actions-rust-lang/setup-rust-toolchain (actions-rust-lang/setup-rust-toolchain)

v2.0.0

Compare Source

What's Changed

• Use CARGO_BUILD_WARNINGS for enforcing warning free compilations (#​98)
  This is a new variable supported by cargo 1.97+ and sets the build.warnings config.
  It allows removing the RUSTFLAGS="-D warnings" default, which will improve compatibility with target.*.rustflags and .cargo/config.toml files.

  This adds a new build-warnings input to configure the value for the build.warnings config.

• Add error matcher for Rust panics
  This will highlight the location of the panic location during tests.

• Reuse output of rustc --version --verbose calls (#​103 by @​ChihweiLHBird)

New Contributors

• @​ChihweiLHBird made their first contribution in #​103

Full Changelog: actions-rust-lang/setup-rust-toolchain@v1.17.0...v2.0.0

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