feat: upgrade to laravel 8.3.1

composer.json

@@ -11,18 +11,19 @@
         "php": "^7.2.5",
         "fideloper/proxy": "^4.2",
         "fruitcake/laravel-cors": "^2.0",
-        "guzzlehttp/guzzle": "^6.3",
+        "guzzlehttp/guzzle": "^7.0.1",
         "justinrainbow/json-schema": "^5.2",
-        "laravel/framework": "^7.0",
+        "laravel/framework": "^8.0",
+        "laravel/legacy-factories": "^1.1",
         "laravel/tinker": "^2.0",
         "tymon/jwt-auth": "^1.0"
     },
     "require-dev": {
-        "facade/ignition": "^2.0",
+        "facade/ignition": "^2.3.6",
         "fzaninotto/faker": "^1.9.1",
         "mockery/mockery": "^1.3.1",
-        "nunomaduro/collision": "^4.1",
-        "phpunit/phpunit": "^8.5"
+        "nunomaduro/collision": "^5.0",
+        "phpunit/phpunit": "^9.0"
     },
     "config": {
         "optimize-autoloader": true,
@@ -36,7 +37,7 @@
     },
     "autoload": {
         "psr-4": {
-            "App\\": "app/", 
+            "App\\": "app/",
             "Opis\\": "opis/"
         },
         "classmap": [