Use ${{ github.action_path }}

Use `${{ github.action_path }}` instead of hardcoded path here:

https://github.com/joshjohanning/azdo_commit_message_validator/blob/main/action.yml#L59C1-L59C79

```bash
        main=$(find ../../_actions/joshjohanning/azdo_commit_message_validator -name "main.js" | grep -v "node_modules")

```