feat: allow amend! prefix as created by git --fixup=reword:<commit>

[lovetheguitar]

Closes #1586

Description

Checklist

• I have read the contributing guidelines

Code Changes

• Add test cases to all the changes you introduce
• Run poetry all locally to ensure this change passes linter check and tests
• Manually test the changes:
  • Verify the feature/bug fix works as expected in real-world scenarios
  • Test edge cases and error conditions
  • Ensure backward compatibility is maintained
  • Document any manual testing steps performed
• Update the documentation for the changes

Documentation Changes

• Run poetry doc locally to ensure the documentation pages renders correctly
• Check and fix any broken links (internal or external) in the documentation

When running poetry doc, any broken internal documentation links will be reported in the console output like this:

INFO    -  Doc file 'config.md' contains a link 'commands/bump.md#-post_bump_hooks', but the doc 'commands/bump.md' does not contain an anchor '#-post_bump_hooks'.

Expected Behavior

Steps to Test This Pull Request

Additional Context

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.91%. Comparing base (120d514) to head (9ff0f14).
⚠️ Report is 765 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1587      +/-   ##
==========================================
+ Coverage   97.33%   97.91%   +0.57%     
==========================================
  Files          42       58      +16     
  Lines        2104     2728     +624     
==========================================
+ Hits         2048     2671     +623     
- Misses         56       57       +1     

Flag	Coverage Δ
unittests	97.91% <ø> (+0.57%)	⬆️

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