Bring over latest changes from the Plugin Deploy Action

[dkotter]

Description of the Change

This Action was copied from our Plugin Deploy Action, with any non-relevant pieces removed. There have been a number of changes to that Action since so this PR brings over the couple that are relevant:

1. Handle dubious ownership error: Fixes #116: detected dubious ownership issue for github workspace. action-wordpress-plugin-deploy#119
2. Ensure changed files are added properly to release: Commit files that were built outside of the action action-wordpress-plugin-deploy#130

How to test the Change

Ensure the Action still works as expected

Changelog Entry

Fixed - Handle the error detected dubious ownership in repository at '/github/workspace' when using a .gitattributes file.
Fixed - Ensure built files are included when used without a BUILD_DIR and .distignore file.

Credits

Props @dkotter

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added Critical Flows, Test Cases, and/or End-to-End Tests to cover my change.
• All new and existing tests pass.

[iamdharmesh]

Thanks for the PR @dkotter. Code LGTM and it tests well. (Tested on forked repo of one of our OSS repo. Logs: https://github.com/iamdharmesh/autoshare-for-twitter/actions/runs/10833763433)

Note: The spell check action is failing on the PR, but I believe this is expected since it is also failing on the Plugin Deploy action.