chore(package): update babel-plugin-tester to version 9.2.0

Closes #14

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "@babel/core": "^7.3.3",
     "@babel/preset-env": "^7.3.1",
     "all-contributors-cli": "^6.7.0",
-    "babel-plugin-tester": "^7.0.0",
+    "babel-plugin-tester": "^9.2.0",
     "husky": "^3.0.0",
     "jest": "^24.1.0",
     "lint-staged": "^10.0.3",