fix: add application/octet-stream mimetype to mp3 and m4a extensions to prevent ext_in error

fixes #145

app/Config/Mimes.php

@@ -131,7 +131,7 @@ class Mimes
         'rar' => ['application/vnd.rar', 'application/x-rar', 'application/rar', 'application/x-rar-compressed'],
         'mid' => 'audio/midi',
         'midi' => 'audio/midi',
-        'mp3' => ['audio/mpeg', 'audio/mpg', 'audio/mpeg3', 'audio/mp3'],
+        'mp3' => ['audio/mpeg', 'audio/mpg', 'audio/mpeg3', 'audio/mp3', 'application/octet-stream'],
         'mpga' => 'audio/mpeg',
         'mp2' => 'audio/mpeg',
         'aif' => ['audio/x-aiff', 'audio/aiff'],
@@ -236,7 +236,7 @@ class Mimes
         '3g2' => 'video/3gpp2',
         '3gp' => ['video/3gp', 'video/3gpp'],
         'mp4' => 'video/mp4',
-        'm4a' => 'audio/x-m4a',
+        'm4a' => ['audio/m4a', 'audio/x-m4a', 'application/octet-stream'],
         'f4v' => ['video/mp4', 'video/x-f4v'],
         'flv' => 'video/x-flv',
         'webm' => 'video/webm',