Bump json5, @microsoft/sp-loader, @microsoft/sp-build-web and @microsoft/sp-webpart-workbench

Bumps [json5](https://github.com/json5/json5) to 2.2.3 and updates ancestor dependencies [json5](https://github.com/json5/json5), [@microsoft/sp-loader](http://aka.ms/spfx), [@microsoft/sp-build-web](http://aka.ms/spfx) and [@microsoft/sp-webpart-workbench](http://aka.ms/spfx). These dependencies need to be updated together.


Updates `json5` from 0.5.1 to 2.2.3
- [Release notes](https://github.com/json5/json5/releases)
- [Changelog](https://github.com/json5/json5/blob/main/CHANGELOG.md)
- [Commits](https://github.com/json5/json5/compare/v0.5.1...v2.2.3)

Updates `@microsoft/sp-loader` from 1.10.0 to 1.16.1

Updates `@microsoft/sp-build-web` from 1.4.1 to 1.16.1

Updates `@microsoft/sp-webpart-workbench` from 1.4.1 to 1.12.1

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: "@microsoft/sp-loader"
  dependency-type: direct:production
- dependency-name: "@microsoft/sp-build-web"
  dependency-type: direct:development
- dependency-name: "@microsoft/sp-webpart-workbench"
  dependency-type: direct:development
...

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

samples/react-script-editor-onprem/package.json

@@ -12,7 +12,7 @@
     "dependencies": {
         "@microsoft/load-themed-styles": "^1.4.1",
         "@microsoft/sp-core-library": "1.4.1",
-        "@microsoft/sp-loader": "^1.4.1",
+        "@microsoft/sp-loader": "^1.16.1",
         "@microsoft/sp-webpart-base": "1.4.1",
         "@types/es6-promise": "0.0.33",
         "@types/react": "15.6.6",
@@ -23,9 +23,9 @@
         "react-dom": "15.6.2"
     },
     "devDependencies": {
-        "@microsoft/sp-build-web": "1.4.1",
+        "@microsoft/sp-build-web": "1.16.1",
         "@microsoft/sp-module-interfaces": "1.4.1",
-        "@microsoft/sp-webpart-workbench": "1.4.1",
+        "@microsoft/sp-webpart-workbench": "1.12.1",
         "@types/chai": "3.4.34",
         "@types/mocha": "2.2.38",
         "@types/prop-types": "ts2.4",