PHP 8.1 compatibility.

.github/workflows/php.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ '7.4', '8.0' ]
+        php-versions: [ '7.4', '8.0', '8.1' ]
 
     steps:
       - uses: actions/checkout@v2

composer.json

@@ -20,16 +20,16 @@
     "beberlei/assert": "^3.3",
     "doctrine/annotations": "^1.12",
     "ocramius/proxy-manager": "^2.13",
-    "psr/simple-cache": "^1.0",
-    "symfony/cache": "^5.3",
-    "symfony/framework-bundle": "^5.3",
-    "symfony/proxy-manager-bridge": "^5.3"
+    "psr/simple-cache": "^1.0|^2.0|^3.0",
+    "symfony/cache": "^5.3|^6.0",
+    "symfony/framework-bundle": "^5.3|^6.0",
+    "symfony/proxy-manager-bridge": "^5.3|^6.0"
   },
   "require-dev": {
     "friendsofphp/php-cs-fixer": "^3.0",
-    "jakub-onderka/php-parallel-lint": "^1.0",
-    "madewithlove/license-checker": "^0.10.0",
+    "madewithlove/license-checker": "^0.10|^1.0",
     "nikic/php-parser": "^4.2",
+    "php-parallel-lint/php-parallel-lint": "^1.3",
     "phpcompatibility/php-compatibility": "^9.1",
     "phpmd/phpmd": "^2.6",
     "phpro/grumphp": "^1.3",
@@ -39,7 +39,7 @@
     "roave/security-advisories": "dev-master",
     "squizlabs/php_codesniffer": "^3.4",
     "symfony/monolog-bundle": "^3.7",
-    "symfony/phpunit-bridge": "^5.3",
+    "symfony/phpunit-bridge": "^5.3|^6.0",
     "vimeo/psalm": "^4.0"
   },
   "autoload": {
@@ -53,11 +53,16 @@
     }
   },
   "config": {
-    "sort-packages": true
+    "sort-packages": true,
+    "allow-plugins": {
+      "phpro/grumphp": true,
+      "dealerdirect/phpcodesniffer-composer-installer": true
+    }
   },
   "scripts": {
     "grumphp7.4": "grumphp run --testsuite=php7.4",
     "grumphp8.0": "grumphp run --testsuite=php8.0",
+    "grumphp8.1": "grumphp run --testsuite=php8.1",
     "lic-check": "license-checker check",
     "phpcs": "phpcs --standard=phpcs.ruleset.xml src",
     "phpcbf": "phpcbf --standard=phpcs.ruleset.xml --extensions=php --tab-width=4 -sp src tests",