update composer dependencies and set the minimum PHP version to 8.1

Author: michalsn

composer.json

@@ -22,24 +22,24 @@
     ],
     "homepage": "https://github.com/codeigniter4/devkit",
     "require": {
-        "php": "^7.4 || ^8.0",
+        "php": "^8.1",
         "codeigniter/coding-standard": "^1.5",
         "fakerphp/faker": "^1.9",
         "mikey179/vfsstream": "^1.6",
         "nexusphp/cs-config": "^3.6",
-        "nexusphp/tachycardia": "^1.3 || ^2.0",
+        "nexusphp/tachycardia": "^2.0",
         "phpstan/extension-installer": "^1.1",
-        "phpstan/phpstan": "^1.0",
-        "phpstan/phpstan-deprecation-rules": "^1.0",
-        "phpstan/phpstan-phpunit": "^1.0",
-        "phpunit/phpunit": "^9.3 || ^10.5.16",
-        "rector/rector": "^0.19 || ^1.0.0",
+        "phpstan/phpstan": "^2.0",
+        "phpstan/phpstan-deprecation-rules": "^2.0",
+        "phpstan/phpstan-phpunit": "^2.0",
+        "phpunit/phpunit": "^10.5 || ^11.5",
+        "rector/rector": "^2.0",
         "roave/security-advisories": "dev-latest",
         "vimeo/psalm": "^5.0"
     },
     "require-dev": {
         "codeigniter4/framework": "^4.1",
-        "icanhazstring/composer-unused": "^0.8.2"
+        "icanhazstring/composer-unused": "dev-main"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,