chore(deps): update codecov/codecov-action action to v4

Author: renovate[bot]

.github/workflows/tests.yml

@@ -60,7 +60,7 @@ jobs:
 
       - # Codecov Coverage
         name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3.1.1
+        uses: codecov/codecov-action@v4.0.0
         with:
           fail_ci_if_error: true
           files: ./unit-tests.coverage.lcov,./integration-tests.coverage.lcov
@@ -100,7 +100,7 @@ jobs:
 
       - # Codecov Coverage
         name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3.1.1
+        uses: codecov/codecov-action@v4.0.0
         with:
           fail_ci_if_error: true
           files: ./coverage.lcov