Update dependency mocha to v11

Author: renovate[bot]

package.json

@@ -21,7 +21,7 @@
     "eslint": "^7.0.0",
     "eslint-config-taskcluster": "^4.0.0",
     "js-yaml": "^4.0.0",
-    "mocha": "^8.0.0"
+    "mocha": "^11.0.0"
   },
   "renovate": {
     "extends": [