Remove the usage of prefer-stable in our CI jobs

stof · stof · commit b92f76416587 · 2024-02-06T11:46:59.000+01:00
diff --git a/composer.json b/composer.json
@@ -11,8 +11,6 @@
             "email": "stof@notk.org"
         }
     ],
-    "minimum-stability": "dev",
-    "prefer-stable": true,
     "require": {
         "php": "^7.3 || ^8",
         "phpspec/prophecy": "^1.18",
