This action is running on a pull_request event for a fork repository. It cannot do anything useful like creating check runs or pull request comments. To run the action on fork repository pull requests, see https://github.com/EnricoMi/publish-unit-test-result-action/blob/v1.20/README.md#support-fork-repositories-and-dependabot-branches

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/setup-python@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/