chore(deps): update codecov/codecov-action action to v6

Author: renovate[bot]

.github/workflows/test_suite.yml

@@ -90,7 +90,7 @@ jobs:
             target/coverage/prof
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           files: lcov.info
           fail_ci_if_error: false