fix: Raise minimum php version to 8.1

Author: Stephan Wentz

.github/workflows/test.yml

@@ -16,7 +16,6 @@ jobs:
       matrix:
         dependencies: ["lowest", "highest"]
         php-version:
-          - "8.0"
           - "8.1"
           - "8.2"
         operating-system: ["ubuntu-latest"]

composer.json

@@ -11,13 +11,13 @@
         }
     ],
     "require": {
-        "php": "^8.0"
+        "php": "^8.1"
     },
     "require-dev": {
         "mikey179/vfsstream": "^1.6.10",
         "phpunit/phpunit": "^10.1",
-        "symfony/http-foundation": "^5.4|^6.0",
-        "symfony/security-core": "^5.4|^6.0",
+        "symfony/http-foundation": "^6.0",
+        "symfony/security-core": "^6.0",
         "brainbits/phpcs-standard": "^7.0",
         "phpstan/phpstan": "^1.0",
         "brainbits/phpstan-rules": "^3.0"