chore(deps): update dependency mocha to v7 (#89)

Author: renovate-bot

datacatalog/snippets/package.json

@@ -20,6 +20,6 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "execa": "^4.0.0",
-    "mocha": "^6.0.0"
+    "mocha": "^7.0.0"
   }
 }