Bump transcoder dependency

It fixes auto-detection on PHP 8.0+ but we do not use that.

 - fossar/transcoder updated from v2.0.0 to v3.0.0 major
   See changes: fossar/transcoder@v2.0.0...v3.0.0
   Release notes: https://github.com/fossar/transcoder/releases/tag/v3.0.0

Author: jtojnar

Diff for: composer.json

@@ -5,7 +5,7 @@
     "require": {
         "php": ">=7.4.0",
         "guzzlehttp/guzzle": "^6.3 || ^7.0",
-        "fossar/transcoder": "^1.0 || ^2.0",
+        "fossar/transcoder": "^1.0 || ^2.0 || ^3.0",
         "guzzlehttp/psr7": "^1.7 || ^2.0"
     },
     "require-dev" : {