fix: Bump jenkins-mocha (#58)

Author: tkyi

package.json

@@ -40,7 +40,7 @@
     "chai": "^4.2.0",
     "eslint": "^4.19.1",
     "eslint-config-screwdriver": "^3.0.0",
-    "jenkins-mocha": "^6.0.0",
+    "jenkins-mocha": "^7.0.0",
     "mockery": "^2.1.0"
   },
   "dependencies": {