deps: remove unused `json3`

package.json

@@ -94,7 +94,6 @@
     "http-proxy": "1.18.1",
     "isomorphic-fetch": "^3.0.0",
     "jest": "^27.0.6",
-    "json3": "3.3.3",
     "karma-chrome-launcher": "3.1.0",
     "karma-coverage-istanbul-reporter": "3.0.3",
     "karma-jasmine": "4.0.1",