Bump eslint-plugin-json from 1.2.0 to 2.1.1

Bumps [eslint-plugin-json](https://github.com/azeemba/eslint-plugin-json) from 1.2.0 to 2.1.1.
- [Release notes](https://github.com/azeemba/eslint-plugin-json/releases)
- [Commits](https://github.com/azeemba/eslint-plugin-json/commits/v2.1.1)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "css-loader": "0.28.6",
     "eslint": "4.19.0",
     "eslint-config-scratch": "5.1.0",
-    "eslint-plugin-json": "1.2.0",
+    "eslint-plugin-json": "2.1.1",
     "eslint-plugin-react": "7.5.1",
     "express": "4.17.1",
     "fastly": "2.2.0",