Try to fix codecov upload

.github/workflows/tests.yml

@@ -24,23 +24,20 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
-          cache: "pip" # caching pip dependencies
+          cache: "pip"
 
-      - name: Install dependencies
+      - name: Configure poetry
         run: |
           python -m pip install --upgrade pip
           python -m pip install poetry
-          python -m poetry install
-      - name: Lint with flake8
+      - name: Install dependencies
         run: |
-          # stop the build if there are Python syntax errors or undefined names
-          python -m poetry run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-          python -m poetry run flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-      - name: Test with pytest
+          python -m poetry install
+      - name: Test with pytest and create coverage report
         run: |
           python -m poetry run coverage run --source=panoptica -m pytest
-      - name: Upload results to Codecov
+          python -m poetry run coverage xml
+      - name: Upload coverage results to Codecov (Only on merge to main)
         # Only upload to Codecov after a merge to the main branch
         if: github.ref == 'refs/heads/main' && github.event_name == 'push'
         uses: codecov/codecov-action@v4