Fix publish workflow

Author: RalfG

.github/workflows/publish.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"
+          python-version: "3.9"
 
       - name: Install dependencies
         run: |
@@ -30,7 +30,7 @@ jobs:
         run: python -m build --sdist --wheel .
 
       - name: Install wheel
-        run: pip install dist/psm_utils-*.whl[idxml]
+        run: pip install pyopenms dist/psm_utils-*.whl
 
       - name: Test wheel
         run: |