chore(deps): update dependency mocha to v7 (#94)

Author: renovate-bot

packages/google-cloud-recaptchaenterprise/package.json

@@ -41,7 +41,7 @@
     "jsdoc-fresh": "^1.0.1",
     "jsdoc-region-tag": "^1.0.2",
     "linkinator": "^1.5.0",
-    "mocha": "^6.1.4",
+    "mocha": "^7.0.0",
     "null-loader": "^3.0.0",
     "pack-n-play": "^1.0.0-2",
     "power-assert": "^1.4.4",

packages/google-cloud-recaptchaenterprise/samples/package.json

@@ -17,7 +17,7 @@
   },
   "devDependencies": {
     "chai": "^4.2.0",
-    "mocha": "^6.1.4",
+    "mocha": "^7.0.0",
     "uuid": "^3.3.2"
   }
 }