Bump eslint from 5.15.2 to 5.15.3 (#5432)

Bumps [eslint](https://github.com/eslint/eslint) from 5.15.2 to 5.15.3.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v5.15.2...v5.15.3)

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

package.json

@@ -55,7 +55,7 @@
     "bcrypt-nodejs": "0.0.3",
     "cross-env": "5.2.0",
     "deep-diff": "1.0.2",
-    "eslint": "5.15.2",
+    "eslint": "5.15.3",
     "eslint-plugin-flowtype": "3.0.0",
     "flow-bin": "0.95.1",
     "gaze": "1.1.3",