Support Laravel 10 & drop before 8

Author: jimmypuckett

composer.json

@@ -20,18 +20,17 @@
         }
     ],
     "require": {
-        "php": ">=7.2",
-        "illuminate/container": "~5.7|~6|~7|~8",
-        "illuminate/mail": "~5.7|~6|~7|~8",
+        "php": ">=8.1",
+        "illuminate/container": "~9|~10",
+        "illuminate/mail": "~9|~10",
         "swiftmailer/swiftmailer": "~6.2",
-        "phpunit/phpunit": "^8.4|^9.0"
+        "phpunit/phpunit": "^9.0"
     },
     "require-dev": {
         "egulias/email-validator": "^2.1.16",
-        "mockery/mockery": "^1.3.1",
-        "psy/psysh": "^0.10",
-        "symfony/thanks": "^1.1",
-        "symfony/var-dumper": "~3.0|^4.2"
+        "mockery/mockery": "^1.5.1",
+        "psy/psysh": "^0.11.1",
+        "symfony/var-dumper": "^6.2"
     },
     "autoload": {
         "psr-4": {