feat(bump): make increment option case insensitive

[edgarrmondragon]

Use str.upper to pre-process the input of --increment

Description

Support lower case arguments for the --increment option of the bump command.

Checklist

• Add test cases to all the changes you introduce
• Run ./scripts/format and ./scripts/test locally to ensure this change passes linter check and test
• Test the changes on the local machine manually
• Update the documentation for the changes

Expected behavior

$ cz bump --increment patch
bump: version 0.6.1 → 0.6.2
tag to create: v0.6.2
increment detected: PATCH

Steps to Test This Pull Request

Additional context

Related:

• Closes Allow lower case names for SemVer --increment  #533

[codecov]

Codecov Report

Merging #534 (a11f203) into master (7b69599) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #534      +/-   ##
==========================================
+ Coverage   97.92%   98.00%   +0.07%     
==========================================
  Files          39       39              
  Lines        1540     1551      +11     
==========================================
+ Hits         1508     1520      +12     
+ Misses         32       31       -1     

Flag	Coverage Δ
unittests	98.00% <100.00%> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
commitizen/cli.py	93.93% <ø> (ø)
commitizen/commands/init.py	91.66% <ø> (ø)
commitizen/__version__.py	100.00% <100.00%> (ø)
commitizen/commands/bump.py	96.42% <100.00%> (+1.23%)	⬆️
commitizen/commands/check.py	100.00% <100.00%> (ø)
commitizen/cz/__init__.py	100.00% <100.00%> (ø)
commitizen/defaults.py	100.00% <100.00%> (ø)

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[woile]

LGTM

[edgarrmondragon]

LGTM

Awesome, thanks for reviewing so quickly 😅

[woile]

Thanks!