Add workflow for maintaining the v1 via a tag instead of a branch

[davereid]

The Issue

The v1 version is currently stored in a branch, which mirrors the main branch. This branch has to be maintained or PR/merge/pushed to by someone regularly.

How This PR Solves The Issue

By adding a v1 tag instead of branch, we can automate this process via a workflow. This matches what other projects use:

• https://github.com/actions/checkout/blob/main/.github/workflows/update-main-version.yml
• https://github.com/peter-evans/create-pull-request/blob/main/.github/workflows/update-major-version.yml

Manual Testing Instructions

Automated Testing Overview

Related Issue Link(s)

Release/Deployment Notes

[davereid]

Going to merge this in for testing.