Bump json5, karma-webpack, ts-loader and webpack (#92)

Removes [json5](https://github.com/json5/json5). It's no longer used after updating ancestor dependencies [json5](https://github.com/json5/json5), [karma-webpack](https://github.com/webpack-contrib/karma-webpack), [ts-loader](https://github.com/TypeStrong/ts-loader) and [webpack](https://github.com/webpack/webpack). These dependencies need to be updated together.


Removes `json5`

Updates `karma-webpack` from 4.0.2 to 5.0.0
- [Release notes](https://github.com/webpack-contrib/karma-webpack/releases)
- [Changelog](https://github.com/ryanclark/karma-webpack/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/karma-webpack/compare/v4.0.2...v5.0.0)

Updates `ts-loader` from 6.2.1 to 9.4.2
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/main/CHANGELOG.md)
- [Commits](https://github.com/TypeStrong/ts-loader/compare/v6.2.1...v9.4.2)

Updates `webpack` from 4.41.2 to 5.75.0
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.41.2...v5.75.0)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -34,11 +34,11 @@
     "karma-jasmine-html-reporter": "1.4.2",
     "karma-sourcemap-loader": "0.3.7",
     "karma-spec-reporter": "0.0.32",
-    "karma-webpack": "4.0.2",
+    "karma-webpack": "5.0.0",
     "rimraf": "3.0.0",
-    "ts-loader": "6.2.1",
+    "ts-loader": "9.4.2",
     "typescript": "3.7.3",
-    "webpack": "4.41.2"
+    "webpack": "5.75.0"
   },
   "repository": {
     "type": "git",