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

Author: renovate[bot]

.github/workflows/test.yml

@@ -40,7 +40,7 @@ jobs:
           make test-jsonschema
 
       - name: coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5.5.3
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
         with:
           use_oidc: true
           files: coverage.out