Update codecov action to v4

.github/workflows/ci-branch.yaml

@@ -25,7 +25,7 @@ jobs:
       - name: Run Tox
         run: |
           tox -e py -- -m "data or not data"
-      - uses: codecov/codecov-action@v4.1.0
+      - uses: codecov/codecov-action@v4
         if: matrix.os == 'ubuntu-latest'
         with:
           token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/ci-pr.yaml

@@ -26,12 +26,15 @@ jobs:
         run: |
           tox -e py
           mv coverage.xml coverage-${{ matrix.python }}.xml
-      - name: Store coverage file
-        uses: actions/upload-artifact@v4
+      - uses: codecov/codecov-action@v4
         if: matrix.os == 'ubuntu-latest'
         with:
-          name: coverage-${{ matrix.python }}
-          path: coverage-${{ matrix.python }}.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: coverage-${{ matrix.python }}.xml
+          name: py${{ matrix.python }}-${{ matrix.os }}
+          flags: unittests
+          fail_ci_if_error: true
+          verbose: true
   integration:
     runs-on: ${{ matrix.os }}
     strategy:
@@ -68,13 +71,6 @@ jobs:
           pip3 install -e .
           pip install --upgrade pip
           pip install --upgrade setuptools
-          mkdir -p ./pr
-          echo ${{ github.event.number }} > ./pr/NR
-      - uses: actions/upload-artifact@v4
-        with:
-          name: pr
-          path: pr/
-          overwrite: true
       - uses: pypa/gh-action-pip-audit@v1.0.8
         with:
           ignore-vulns: |