chore(deps): update dependency mocha to v7 (#190)

Author: renovate-bot

security-center/snippets/package.json

@@ -17,6 +17,6 @@
   },
   "devDependencies": {
     "chai": "^4.2.0",
-    "mocha": "^6.0.2"
+    "mocha": "^7.0.0"
   }
 }