Bump codecov/codecov-action from 5.3.1 to 5.4.3 (learning-process#395)

Author: dependabot[bot]

.github/workflows/main.yml

@@ -1103,7 +1103,7 @@ jobs:
                 --xml --output ../coverage.xml \
                 --html=../cov-report/index.html --html-details
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v5.3.1
+        uses: codecov/codecov-action@v5.4.3
         with:
           files: coverage.xml
       - name: Upload coverage report artifact