chore(deps): update dependency mocha to v8.2.1

Author: renovate-bot

package-lock.json

@@ -52,7 +52,7 @@
     "eslint-plugin-prettier": "3.1.4",
     "eslint-plugin-promise": "4.2.1",
     "eslint-plugin-standard": "4.0.2",
-    "mocha": "8.2.0",
+    "mocha": "8.2.1",
     "prettier": "2.1.2",
     "prettier-config-standard": "1.0.1",
     "rollup": "2.33.1",