chore: bump php requirement to 8.1

.github/workflows/test.yml

@@ -13,7 +13,6 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - '8.0'
           - '8.1'
           - '8.2'
     steps:

composer.json

@@ -12,7 +12,7 @@
 		}
 	],
 	"require": {
-		"php": "^8.0",
+		"php": "^8.1",
 		"phpstan/phpstan": "^1.10"
 	},
 	"require-dev": {

src/Sealed.php

@@ -13,6 +13,6 @@ final class Sealed
 	 * @param non-empty-array<class-string> $permits
 	 */
 	public function __construct(
-		public array $permits,
+		public readonly array $permits,
 	) {}
 }

src/SealedClassAllowedSubTypesClassReflectionExtension.php

@@ -16,7 +16,7 @@
 final class SealedClassAllowedSubTypesClassReflectionExtension implements AllowedSubTypesClassReflectionExtension
 {
 	public function __construct(
-		private ScopeFactory $scopeFactory,
+		private readonly ScopeFactory $scopeFactory,
 	)
 	{
 	}

src/SealedClassRule.php

@@ -20,7 +20,7 @@
 final class SealedClassRule implements Rule
 {
 	public function __construct(
-		private ReflectionProvider $reflectionProvider,
+		private readonly ReflectionProvider $reflectionProvider,
 	)
 	{
 	}