chore(deps-dev): add patch-package direct dependency (#4217)

Author: trivikr

package.json

@@ -34,6 +34,7 @@
     "karma-chrome-launcher": "2.2.0",
     "karma-jasmine": "^1.1.0",
     "mocha": "^3.0.0",
+    "patch-package": "6.4.7",
     "repl.history": "*",
     "semver": "*",
     "typescript": "2.0.8",
@@ -147,4 +148,4 @@
     "helper-test": "mocha scripts/lib/test-helper.spec.js",
     "csm-functional-test": "mocha test/publisher/functional_test"
   }
-}
+}