Update codecov/codecov-action action to v5.4.3

Signed-off-by: Mend Renovate <bot@renovateapp.com>

Author: renovate-bot

.github/workflows/operator.yml

@@ -175,7 +175,7 @@ jobs:
         run: make test
 
       - name: Upload test coverage
-        uses: codecov/codecov-action@0565863a31f2c772f9f0395002a31e3f06189574 # v5.4.0
+        uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./cover.out