devel/diffsitter: update to 0.7.3

What's Changed
- build(deps): bump clap from 4.0.27 to 4.0.29 by @dependabot in #494
- chore: Update grammars by @afnanenayet in #501
- Update deps by @afnanenayet in #499
- Add related project by @afnanenayet in #500
- chore: Update dependencies by @afnanenayet in #508
- chore(grammars): Update grammars by @afnanenayet in #510
- docs(testing): Add note about why tests break by @afnanenayet in #511
- ci(windows): Add back windows target by @afnanenayet in #512

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