chore(deps): update dependency @rollup/plugin-json to v6

Author: renovate[bot]

package.json

@@ -24,7 +24,7 @@
     }
   },
   "devDependencies": {
-    "@rollup/plugin-json": "^4.0.3",
+    "@rollup/plugin-json": "^6.0.0",
     "@rollup/plugin-yaml": "^3.0.0",
     "@types/debug": "^4.1.5",
     "@types/jest": "^25.2.1",