Add concurrency group to CI to automatically cancel in-flight jobs when applicable

[DanSheps]

Proposed Changes

Add Concurrency group to CI to automatically cancel in-flight jobs when applicable:

• Push to branch
• Push to pull request

Justification

Currently, when tests are running and there is a new push to the branch or PR the tests will continue. Adding a concurrency group will cancel the in-flight tests and run only the newest test.

This doesn't add much but will optimize our CI a little bit.