Merge branch 'master' of https://github.com/learning-process/parallel_programming_course into an/hot-fix-mpi-time

Author: allnes

.github/workflows/ubuntu.yml

@@ -385,6 +385,7 @@ jobs:
         uses: codecov/codecov-action@v5.5.1
         with:
           files: coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
       - name: Upload coverage report artifact
         id: upload-cov
         uses: actions/upload-artifact@v4