Update composer dependencies for Laravel 11/12 and PHP 8.3/8.4

- Set minimum PHP version to ^8.3
- Update Laravel dependencies to support ^11.0 < /dev/null | ^12.0
- Upgrade Guzzle to ^7.0 (remove 6.x support)
- Update dev dependencies:
  - mockery/mockery: ^1.6
  - orchestra/testbench: ^9.0|^10.0
  - phpunit/phpunit: ^10.0|^11.0
  - vimeo/psalm: ^6.12.0
- Update composer/semver to ^3.4

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: cuppett

composer.json

@@ -24,9 +24,10 @@
         }
     ],
     "require": {
-        "guzzlehttp/guzzle": "^6.5|^7.0",
-        "illuminate/macroable": "^9.35|^10.1|^11.0",
-        "illuminate/support": "^9.35|^10.1|^11.0",
+        "php": "^8.3",
+        "guzzlehttp/guzzle": "^7.0",
+        "illuminate/macroable": "^11.0|^12.0",
+        "illuminate/support": "^11.0|^12.0",
         "ratchet/pawl": "^0.4.1",
         "symfony/process": "^6.0|^7.0",
         "composer/semver": "^3.4",
@@ -49,10 +50,10 @@
         "test": "vendor/bin/phpunit"
     },
     "require-dev": {
-        "mockery/mockery": "^1.5",
-        "orchestra/testbench": "^8.1|^9.0",
-        "phpunit/phpunit": "^9.5.20|^10.0",
-        "vimeo/psalm": "^4.20|^5.22"
+        "mockery/mockery": "^1.6",
+        "orchestra/testbench": "^9.0|^10.0",
+        "phpunit/phpunit": "^10.0|^11.0",
+        "vimeo/psalm": "^6.12.0"
     },
     "config": {
         "sort-packages": true