chore(deps): bump react-dropzone from 15.0.0 to 20.0.0 in /frontend (#2617)

Bumps [react-dropzone](https://github.com/react-dropzone/react-dropzone) from 15.0.0 to 20.0.0.
- [Release notes](https://github.com/react-dropzone/react-dropzone/releases)
- [Commits](https://github.com/react-dropzone/react-dropzone/compare/v15.0.0...v20.0.0)

---
updated-dependencies:
- dependency-name: react-dropzone
  dependency-version: 19.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -48,7 +48,7 @@
     "react-chartjs-2": "^5.3.0",
     "react-day-picker": "^10.0.1",
     "react-dom": "^19.2.8",
-    "react-dropzone": "^15.0.0",
+    "react-dropzone": "^20.0.0",
     "react-force-graph-2d": "^1.29.1",
     "react-google-drive-picker": "^1.2.2",
     "react-i18next": "^17.0.6",