chore(package): update mocha to version 7.1.2

Closes #6

Author: greenkeeper[bot]

package.json

@@ -70,7 +70,7 @@
 		"@types/mocha": "^5.2.7",
 		"chai": "^4.2.0",
 		"coveralls": "^3.0.9",
-		"mocha": "^6.2.2",
+		"mocha": "^7.1.2",
 		"nyc": "^14.1.1",
 		"prettier": "^1.19.1",
 		"sonarjs": "^1.0.0",