Use more inclusive nomenclature in branch name, master -> main

[kevinswiber]

Hi there. Let's adopt more inclusive language in the branch names of this repository.

• master -> main (how-to)

Thanks for your consideration!

[jkonrath-postman]

A few bits of research:

• https://github.com/github/renaming
• https://docs.github.com/en/github/administering-a-repository/managing-branches-in-your-repository/renaming-a-branch
• There's a few steps folks will have to do to update their local clone: https://docs.github.com/en/github/administering-a-repository/managing-branches-in-your-repository/renaming-a-branch#updating-a-local-clone-after-a-branch-name-changes
• No idea how this impacts GH actions or our build process

[Abhishekvrt]

Hey there!! Can I solve this issue? Can anybody will assign me this one.