Add an entry to the changelog for `wp_get_mime_types()` mentioning that GIMP (xcf) file support was added in 4.2.

See [31578].
Fixes #31146.


git-svn-id: https://develop.svn.wordpress.org/trunk@31590 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/functions.php

@@ -2156,6 +2156,7 @@ function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
  * Retrieve list of mime types and file extensions.
  *
  * @since 3.5.0
+ * @since 4.2.0 Support was added for GIMP (xcf) files.
  *
  * @return array Array of mime types keyed by the file extension regex corresponding to those types.
  */