cal.pub0.org/.github/PULL_REQUEST_TEMPLATE.md

## What does this PR do?

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Fixes # (issue)

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**Environment**: Staging(main branch) / Production

## Type of change

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- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] Chore (refactoring code, technical debt, workflow improvements)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] This change requires a documentation update

## How should this be tested?

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- [ ] Test A
- [ ] Test B

## Checklist

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- I haven't read the [contributing guide](https://github.com/calcom/cal.com/blob/main/CONTRIBUTING.md)
- My code doesn't follow the style guidelines of this project
- I haven't performed a self-review of my own code and corrected any misspellings
- I haven't commented my code, particularly in hard-to-understand areas
- I haven't checked if my PR needs changes to the documentation
- I haven't checked if my changes generate no new warnings
- I haven't added tests that prove my fix is effective or that my feature works
- I haven't checked if new and existing unit tests pass locally with my changes