build(deps-dev): bump webpack from 4.46.0 to 5.73.0 (#260)

Bumps [webpack](https://github.com/webpack/webpack) from 4.46.0 to 5.73.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.46.0...v5.73.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

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

package.json

@@ -120,7 +120,7 @@
         "tslint": "^5.20.1",
         "tslint-react": "^3.4.0",
         "webfonts-generator": "^0.4.0",
-        "webpack": "^4.46.0",
+        "webpack": "^5.73.0",
         "webpack-bundle-analyzer": "^4.4.0",
         "webpack-cli": "^4.10.0",
         "webpack-dev-server": "^4.9.3",