Changed dev-dependency for composer/composer

Add composer 2.0.0 development compatibility and support for upcoming 2.x releases

Signed-off-by: Maximilian Bösing <2189546+boesing@users.noreply.github.com>

composer.json

@@ -32,7 +32,7 @@
         "laminas/laminas-zendframework-bridge": "^1.0"
     },
     "require-dev": {
-        "composer/composer": "^1.4.1 || ^2.0@dev",
+        "composer/composer": "^1.5.2 || ~2.0.0.0@dev || ^2.0",
         "laminas/laminas-coding-standard": "~1.0.0",
         "malukenho/docheader": "^0.1.7",
         "mikey179/vfsstream": "^1.6.7",