feat(codecommit): throw ValidationErrors instead of untyped Errors

[kaizencc]

Issue # (if applicable)

Relates to #32569

Reason for this change

untyped Errors are not recommended

Description of changes

ValidationErrors everywhere

Describe any new or updated permissions being added

None

Description of how you validated changes

Existing tests. Exemptions granted as this is a refactor of existing code.

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[aws-cdk-automation]

(This review is outdated)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.38%. Comparing base (b6b91dd) to head (6f68002).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #33854   +/-   ##
=======================================
  Coverage   82.38%   82.38%           
=======================================
  Files         120      120           
  Lines        6937     6937           
  Branches     1170     1170           
=======================================
  Hits         5715     5715           
  Misses       1119     1119           
  Partials      103      103           

Flag	Coverage Δ
suite.unit	82.38% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	∅ <ø> (∅)
packages/aws-cdk-lib/core	82.38% <ø> (ø)

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✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

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[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 6f68002
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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