Bump tomsgu/pdf-merger to ^0.2

Author: Tomsgu

composer.json

@@ -14,7 +14,7 @@
   "require": {
     "php": "^7.2 || ^8.0",
     "symfony/framework-bundle": "^4.0",
-    "tomsgu/pdf-merger": "^0.1"
+    "tomsgu/pdf-merger": "^0.2"
   },
   "require-dev": {
     "phpunit/phpunit": "^9.0"