chore(deps): update dependency lint-staged to v9.2.1 (#860)

Author: renovate[bot]

package-lock.json

@@ -78,7 +78,7 @@
     "husky": "3.0.1",
     "js-yaml": "3.13.1",
     "json-stringify-pretty-compact": "2.0.0",
-    "lint-staged": "9.2.0",
+    "lint-staged": "9.2.1",
     "mocha": "6.2.0",
     "ncp": "2.0.0",
     "node-sass": "4.12.0",