chore: Rename default branch to main

[lahirumaramba]

Updated default branch name to main

If you have a local clone, you can update it by running the following commands:

git branch -m master main
git fetch origin
git branch -u origin/main main
git remote set-head origin -a

Optionally, run the following command to remove tracking references to the old branch name.

git remote prune origin

[gemini-code-assist[bot]]

Summary of Changes

Hello @lahirumaramba, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request systematically updates all references to the default branch from 'master' to 'main' across the repository. This change impacts CI/CD scripts, release preparation tools, and contributor documentation, ensuring consistency with the new branch name and promoting inclusive language practices within the project.

Highlights

• Default Branch Renaming: The project's default branch has been renamed from 'master' to 'main' to align with modern naming conventions.
• Script Updates: Internal scripts, including 'publish_preflight_check.sh' and 'prepare_release.sh', have been updated to reference the new 'main' branch.
• Documentation Alignment: The 'CONTRIBUTING.md' file has been modified to reflect the default branch change, specifically in the pull request creation link.

Ignored Files

• Ignored by pattern: .github/workflows/** (2)
  • .github/workflows/nightly.yml
  • .github/workflows/release.yml

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