[dev]: GH Action or workflow that closes issues after PR merged into master

[jsjoeio]

Problem

Because we don't use master as the default branch, issues won't close with the trigger keywords or even linking in PRs. This leads to a couple extra steps for closing issues.

Solution

A GitHub Action or workflow that closes issues merged into master

[jsjoeio]

Discussed an alternative solution internally - switching default branch to master

[jsjoeio]

We decided to change the default branch to main instead of a version branch. That should resolve this issue.