Fix/return code catch

[woile]

Types of changes

• Bug fix
• New feature
• Refactoring
• Breaking change (any change that would cause existing functionality to not work as expected)
• Documentation update
• Other (please describe)

Description

Use return code in bump and commit

Checklist

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

Steps to Test This Pull Request

1. Create a fake repo
2. Add pre-commit hooks
3. Start bumping/commiting

Expected behavior

Hooks should be displayed normally, instead of like an error.

Related Issue

Closes #197 #222

[codecov]

Codecov Report

Merging #229 into master will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #229      +/-   ##
==========================================
+ Coverage   95.64%   95.70%   +0.05%     
==========================================
  Files          34       34              
  Lines         942      955      +13     
==========================================
+ Hits          901      914      +13     
  Misses         41       41              

Flag	Coverage Δ
#unittests	95.70% <100.00%> (+0.05%)	⬆️

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

Impacted Files	Coverage Δ
commitizen/__version__.py	100.00% <100.00%> (ø)
commitizen/cmd.py	100.00% <100.00%> (ø)
commitizen/commands/bump.py	90.58% <100.00%> (-0.88%)	⬇️
commitizen/commands/changelog.py	97.29% <100.00%> (+0.07%)	⬆️
commitizen/commands/commit.py	98.27% <100.00%> (+1.78%)	⬆️
commitizen/config/__init__.py	97.67% <100.00%> (ø)
commitizen/git.py	95.45% <100.00%> (+0.27%)	⬆️

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[Lee-W]

Nice!