chore(package): update mocha to version 7.2.0

Closes #126

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
   "devDependencies": {
     "chai": "^4.0.2",
     "fbp-spec": "^0.6.6",
-    "mocha": "^6.0.0",
+    "mocha": "^7.2.0",
     "yaml-lint": "^1.2.4"
   },
   "dependencies": {