Revert Dingo version change - shit is broken and I don't know why.

composer.json

@@ -28,7 +28,7 @@
     "require-dev": {
         "orchestra/testbench": "3.5.* || 3.6.* || 3.7.*",
         "phpunit/phpunit": "^6.0.0 || ^7.4.0",
-        "dingo/api": "^2.0.0 <2.1.0 || ^2.0.0 >2.1.0",
+        "dingo/api": "2.0.0-alpha1",
         "mockery/mockery": "^1.2.0",
         "league/fractal": "^0.17.0",
         "phpstan/phpstan": "^0.9.0"