bump: rust 1.73

[baszalmstra]

Bump Rust to 1.73 and fixes all clippy warnings and errors.

[codecov]

Codecov Report

Attention: 16 lines in your changes are missing coverage. Please review.

Comparison is base (ac4b4b5) 87.31% compared to head (1bf607d) 87.23%.

❗ Current head 1bf607d differs from pull request most recent head 897ae25. Consider uploading reports for the commit 897ae25 to get more accurate results

Files	Patch %	Lines
crates/mun_memory/src/gc/mark_sweep.rs	50.00%	6 Missing ⚠️
crates/mun_codegen/src/value/float_value.rs	0.00%	2 Missing ⚠️
crates/mun_codegen/src/value/mod.rs	0.00%	1 Missing ⚠️
crates/mun_codegen/src/value/pointer_value.rs	66.66%	1 Missing ⚠️
crates/mun_hir/src/arena.rs	0.00%	1 Missing ⚠️
crates/mun_hir/src/ids.rs	50.00%	1 Missing ⚠️
crates/mun_hir/src/item_tree.rs	0.00%	1 Missing ⚠️
crates/mun_language_server/src/state/workspace.rs	0.00%	1 Missing ⚠️
crates/mun_runtime/src/lib.rs	0.00%	1 Missing ⚠️
crates/mun_skeptic/src/lib.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #541      +/-   ##
==========================================
- Coverage   87.31%   87.23%   -0.09%     
==========================================
  Files         275      269       -6     
  Lines       31182    31177       -5     
==========================================
- Hits        27227    27197      -30     
- Misses       3955     3980      +25     

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