Allowing ecodev/graphql-upload 6.1 that has PHP 8 support

Author: moufmouf

composer.json

@@ -20,7 +20,7 @@
         "phpdocumentor/reflection-docblock": "^4.3 || ^5.0",
         "phpdocumentor/type-resolver": "^1.0.1",
         "psr/http-message": "^1",
-        "ecodev/graphql-upload": "^4.0",
+        "ecodev/graphql-upload": "^4.0 || ^5.0 || ^6.0",
         "webmozart/assert": "^1.4",
         "symfony/cache": "^4.3 | ^5",
         "thecodingmachine/cache-utils": "^1",