chore: use std assert_matches macro

[Soundcreates]

Fixes #1758.

Replace the external assert_matches dev-dependency with Rust's stabilized std::assert_matches! macro and remove the unused dependency declarations.

Tests: cargo test -p masonry_core -p masonry_testing -p masonry --no-default-features

[PoignardAzur]

Thanks for the PR!

Remember to push the updated Cargo.lock.

[Soundcreates]

I updated and pushed the revised Cargo.lock in commit b5665a85.

[PoignardAzur]

Thanks.

This is effectively blocked on #1838.

[Soundcreates]

Thanks.

This is effectively blocked on #1838.

Understood

[PoignardAzur]

You should be able to rebase and merge this.

[Soundcreates]

Have updated the branch to be synced with main

[PoignardAzur]

Still need to fix the formatting.

[Soundcreates]

Fixed the formatting issues with cargo fmt --all and pushed commit 788c3317. The targeted test suite passes: cargo test -p masonry_core -p masonry_testing -p masonry --no-default-features.

[DJMcNab]

The CI changes in 6616c5e are a little bit surprising. Although I cannot remember why the original form was needed in the first place...