minor #1087 [LiveComponent][Docs] Fix version added for file uploads support (jmsche)

This PR was merged into the 2.x branch.

Discussion
----------

[LiveComponent][Docs] Fix version added for file uploads support

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Tickets       | N/A
| License       | MIT

File uploads support for Live Components was introduced with v2.11, however the docs mention v2.9 instead.

See #834 (comment)

Commits
-------

16b83ec [LiveComponent][Docs] Fix version added for file uploads support

Author: weaverryan

src/LiveComponent/doc/index.rst

@@ -1158,9 +1158,9 @@ shortcuts. We even added a flash message!
 Uploading files
 ---------------
 
-.. versionadded:: 2.9
+.. versionadded:: 2.11
 
-    The ability to upload files to actions was added in version 2.9.
+    The ability to upload files to actions was added in version 2.11.
 
 Files aren't sent to the component by default. You need to use a live action
 to handle the files and tell the component when the file should be sent: