feat(branch-name): allow crowdin branch name [EXP-2523]

[maastrich]

What does it do? Why?

Adds support for crowdin/update-translations branch pattern and refactors regex validation to use .test() method for better performance and readability.

Scope

• Updates branch name validation regex to include crowdin translation updates
• Refactors existing regex patterns to use .test() instead of .match() for cleaner code
• Adds corresponding test cases for the new branch pattern

QA

• All existing branch patterns continue to work
• New crowdin pattern is properly validated
• Invalid crowdin patterns are correctly rejected

Test URL

N/A - Backend validation changes

[Copilot]

Pull Request Overview

This PR adds support for Crowdin translation update branches by extending branch name validation to accept the crowdin/update-translations pattern. The code is also refactored to use the .test() method instead of .match() for improved performance and readability.

• Adds validation for crowdin/update-translations branch pattern
• Refactors regex validation from .match() to .test() method
• Updates test cases to cover both valid and invalid crowdin branch patterns

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
lib/branch.js	Adds crowdin branch validation and refactors regex usage from .match() to .test()
lib/branch.test.js	Adds test cases for valid and invalid crowdin branch patterns