bumped phpunit version and deps

Author: tabacitu

composer.json

@@ -35,7 +35,7 @@
         "laravel/framework": "^7.0",
         "prologue/alerts": "^0.4.1",
         "creativeorange/gravatar": "~1.0",
-        "nesbot/carbon": "^2.14.0",
+        "nesbot/carbon": "^2.14",
         "ocramius/package-versions": "^1.4",
         "laravel/helpers": "^1.1",
         "doctrine/dbal": "^2.5",
@@ -44,11 +44,11 @@
         "laravel/ui": "2.*"
     },
     "require-dev": {
-        "phpunit/phpunit": "~7.0",
+        "phpunit/phpunit": "~8.0",
         "scrutinizer/ocular": "~1.1",
-        "orchestra/testbench": "^3.0",
-        "orchestra/database": "3.8.x-dev",
-        "spatie/laravel-translatable": "^3.1.3"
+        "orchestra/testbench": "^4.0",
+        "orchestra/database": "^4.0",
+        "spatie/laravel-translatable": "^4.0"
     },
     "autoload": {
         "psr-4": {