Bump eslint from 2.13.1 to 4.18.2 in /swagger-editor

Bumps [eslint](https://github.com/eslint/eslint) from 2.13.1 to 4.18.2.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v2.13.1...v4.18.2)

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

swagger-editor/package.json

@@ -101,7 +101,7 @@
     "deepmerge": "^1.3.2",
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-15": "^1.0.5",
-    "eslint": "^2.13.1",
+    "eslint": "^4.18.2",
     "eslint-plugin-import": "^2.13.0",
     "eslint-plugin-react": "^4.3.0",
     "expect": "^1.20.2",