fix(deps): bump @mux/mux-uploader-react (#8296)

Bumps [@mux/mux-uploader-react](https://github.com/muxinc/elements/tree/HEAD/packages/mux-uploader-react) from 1.0.0-beta.18 to 1.0.0-beta.19.
- [Release notes](https://github.com/muxinc/elements/releases)
- [Changelog](https://github.com/muxinc/elements/blob/main/packages/mux-uploader-react/CHANGELOG.md)
- [Commits](https://github.com/muxinc/elements/commits/@mux/mux-uploader-react@1.0.0-beta.19/packages/mux-uploader-react)

---
updated-dependencies:
- dependency-name: "@mux/mux-uploader-react"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

apps/mux/frontend/package.json

@@ -24,7 +24,7 @@
     "@contentful/f36-components": "4.67.0",
     "@contentful/react-apps-toolkit": "1.2.16",
     "@mux/mux-player-react": "2.7.0",
-    "@mux/mux-uploader-react": "1.0.0-beta.18",
+    "@mux/mux-uploader-react": "1.0.0-beta.19",
     "crypto-browserify": "^3.12.0",
     "react": "17.0.2",
     "react-dom": "17.0.2",