DEV: Bump Uppy to v2.X and rebuild bundle (PR #14173)

Uppy V2 includes the S3 multipart batch presigning change we contributed in d613b849a6591083f8a0968aa8d66537e231bbcd so we need to upgrade it. This also brings both package.json files into line and accounts for the renaming of Plugin to BasePlugin in Uppy.

This has been tested and is working locally for both regular Ember and Ember CLI, for uploads.json XHR uploads and for direct S3 uploads (single and multipart).