Bump rollup-plugin-json from 3.1.0 to 4.0.0

Bumps [rollup-plugin-json](https://github.com/rollup/rollup-plugin-json) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/rollup/rollup-plugin-json/releases)
- [Changelog](https://github.com/rollup/rollup-plugin-json/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup-plugin-json@v3.1.0...v4.0.0)

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

package.json

@@ -51,7 +51,7 @@
     "rollup": "^1.7.4",
     "rollup-plugin-babel": "^4.3.2",
     "rollup-plugin-commonjs": "^9.2.2",
-    "rollup-plugin-json": "^3.1.0",
+    "rollup-plugin-json": "^4.0.0",
     "rollup-plugin-node-resolve": "^4.0.1"
   },
   "devDependencies": {