build(deps): bump react-dropzone from 12.0.4 to 14.2.1 (#843)

* build(deps): bump react-dropzone from 12.0.4 to 14.2.1

Bumps [react-dropzone](https://github.com/react-dropzone/react-dropzone) from 12.0.4 to 14.2.1.
- [Release notes](https://github.com/react-dropzone/react-dropzone/releases)
- [Commits](https://github.com/react-dropzone/react-dropzone/compare/v12.0.4...v14.2.1)

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

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

* toolbar: update for breaking changes in ReactDropZone

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

package.json

@@ -83,7 +83,7 @@
         "react-complex-tree": "^1.1.5",
         "react-dev-utils": "^12.0.1",
         "react-dom": "^16.13.1",
-        "react-dropzone": "^12.0.4",
+        "react-dropzone": "^14.2.1",
         "react-monaco-editor": "^0.48.0",
         "react-popper": "^2.3.0",
         "react-redux": "^8.0.2",