chore(package): update @types/mocha to version 7.0.2

Closes #6

Author: greenkeeper[bot]

package.json

@@ -65,7 +65,7 @@
 	},
 	"devDependencies": {
 		"@types/chai": "^4.2.7",
-		"@types/mocha": "^5.2.7",
+		"@types/mocha": "^7.0.2",
 		"chai": "^4.2.0",
 		"coveralls": "^3.0.9",
 		"mocha": "^6.2.2",