DEV: Update GitHub Artifacts

Author: Gui-FernandesBR

.github/workflows/test_pytest.yaml

@@ -64,7 +64,7 @@ jobs:
         run: pytest tests/acceptance --cov=rocketpy --cov-append --cov-report=xml
 
       - name: Upload coverage to artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: coverage.xml
@@ -75,9 +75,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Download all coverage reports
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
       - name: Upload to Codecov
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: |