Pypi Deploy only on new version.

pypi deployment is running unnecessarily despite the latest tag not being different from the 'pyproject.toml' file

**Describe the bug**
Despite the `latest` tag not being different from the `pyproject.toml` file, the PyPI deployment is being run unnecessarily.

**Expected behavior**
The PyPI deployment should not be run if the `latest` tag is not different from the `pyproject.toml` file.
