chore(deps): update codecov/codecov-action action to v5.4.0

Author: renovate[bot]

.github/workflows/test.yml

@@ -67,7 +67,7 @@ jobs:
               chmod +x edgevpn
               EDGEVPNCONFIG=config.yaml ./.github/tests.sh
       - name: Codecov
-        uses: codecov/codecov-action@v5.3.1
+        uses: codecov/codecov-action@v5.4.0
         with:
           file: coverage.txt