Bump json5 and ts-loader

Bumps [json5](https://github.com/json5/json5) to 2.2.3 and updates ancestor dependency [ts-loader](https://github.com/TypeStrong/ts-loader). These dependencies need to be updated together.


Updates `json5` from 2.1.3 to 2.2.3
- [Release notes](https://github.com/json5/json5/releases)
- [Changelog](https://github.com/json5/json5/blob/main/CHANGELOG.md)
- [Commits](json5/json5@v2.1.3...v2.2.3)

Updates `ts-loader` from 8.0.12 to 8.4.0
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/main/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v8.0.12...v8.4.0)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: ts-loader
  dependency-type: direct:development
...

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

package.json

@@ -56,7 +56,7 @@
     "prettier": "^2.2.1",
     "source-map-loader": "^1.1.3",
     "ts-jest": "^26.4.4",
-    "ts-loader": "^8.0.12",
+    "ts-loader": "^8.4.0",
     "typescript": "^4.1.3",
     "web-ext-types": "^3.2.1",
     "webpack": "^5.11.0",