Bump pypa/gh-action-pypi-publish in /.github/workflows

Bumps [pypa/gh-action-pypi-publish](https://github.com/pypa/gh-action-pypi-publish) from 1.9.0 to 1.13.0.
- [Release notes](https://github.com/pypa/gh-action-pypi-publish/releases)
- [Commits](pypa/gh-action-pypi-publish@v1.9.0...v1.13.0)

---
updated-dependencies:
- dependency-name: pypa/gh-action-pypi-publish
  dependency-version: 1.13.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build_test_and_push.yml

@@ -45,7 +45,7 @@ jobs:
         run: coverage run -m unittest discover -s test -p "Test*.py"
         working-directory: ./ #optional
     - name: Publish evcouplings to PyPI
-      uses: pypa/gh-action-pypi-publish@v1.9.0
+      uses: pypa/gh-action-pypi-publish@v1.13.0
       with:
         user: __token__
         password: ${{ secrets.PYPI_ACCESS_TOKEN }}