chore: Change default branch

[m-seidel]

Description

Switching default branch to main

Related Issue

Motivation and Context

This is an important step to unify all repos.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING part in the readme.
• I have added tests to cover my changes.
• All new and existing tests passed.

Test plan:

[github-actions]

size-limit report 📦

Path	Size
src/main.js	6.6 KB (0%)

[staffbase-actions]

🎉 This PR is included in version 3.0.3 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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