chore(package): update lint-staged to version 7.0.0

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "eslint-config-finn": "^3.0.0",
     "eslint-config-finn-prettier": "^3.0.0",
     "husky": "^0.14.3",
-    "lint-staged": "^6.0.0",
+    "lint-staged": "^7.0.0",
     "prettier": "^1.9.2",
     "semantic-release": "^12.2.2",
     "travis-deploy-once": "^4.3.1"