Bump lint-staged from 7.2.2 to 9.2.1 (#43)

Bumps [lint-staged](https://github.com/okonet/lint-staged) from 7.2.2 to 9.2.1.
- [Release notes](https://github.com/okonet/lint-staged/releases)
- [Commits](lint-staged/lint-staged@v7.2.2...v9.2.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -29,7 +29,7 @@
     "codecov": "3.1.0",
     "husky": "2.7.0",
     "jest": "^23.5.0",
-    "lint-staged": "7.2.2",
+    "lint-staged": "9.2.1",
     "prettier": "1.18.2",
     "rimraf": "^2.6.2",
     "ts-jest": "^23.1.4",