@uppy/utils: improve return type of dataURItoFile

[aduh95]

As its name implies, it returns a File.

[github-actions]

Diff output files

diff --git a/packages/@uppy/utils/lib/dataURItoBlob.js b/packages/@uppy/utils/lib/dataURItoBlob.js
index ec6c556..45a47d2 100644
--- a/packages/@uppy/utils/lib/dataURItoBlob.js
+++ b/packages/@uppy/utils/lib/dataURItoBlob.js
@@ -1,5 +1,5 @@
 const DATA_URL_PATTERN = /^data:([^/]+\/[^,;]+(?:[^,]*?))(;base64)?,([\s\S]*)$/;
-export default function dataURItoBlob(dataURI, opts, toFile) {
+function dataURItoBlob(dataURI, opts, toFile) {
   var _ref, _opts$mimeType;
   const dataURIData = DATA_URL_PATTERN.exec(dataURI);
   const mimeType =
@@ -27,3 +27,4 @@ export default function dataURItoBlob(dataURI, opts, toFile) {
     type: mimeType,
   });
 }
+export default dataURItoBlob;