chore(package): update karma to version 5.0.3

Closes #54

Author: greenkeeper[bot]

package.json

@@ -44,7 +44,7 @@
     "eslint-config-xo-space": "^0.20.0",
     "eslint-plugin-jsx-a11y": "^6.1.1",
     "eslint-plugin-react": "^7.11.0",
-    "karma": "^3.0.0",
+    "karma": "^5.0.3",
     "karma-browserify": "^5.3.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-cli": "^1.0.1",