Test on PHP 8.1

Author: simPod

.github/workflows/php.yml

@@ -19,6 +19,7 @@ jobs:
           - "7.3"
           - "7.4"
           - "8.0"
+          - "8.1"
         dependencies:
           - "lowest"
           - "highest"
@@ -27,9 +28,11 @@ jobs:
           # symfony/yaml v5 does not run on PHP 7.1
           - php: '7.1'
             symfony-yaml: '^5'
-          # symfony/yaml v3.4 is not compatible with PHP 8.0 but has no upper-bound, so it installs on it
+          # symfony/yaml v3.4 is not compatible with PHP 8.0+ but has no upper-bound, so it installs on it
           - php: '8.0'
             symfony-yaml: '^3.4'
+          - php: '8.1'
+            symfony-yaml: '^3.4'
 
     env:
       SYMFONY_YAML:  ${{ matrix.symfony-yaml }}

composer.json

@@ -25,7 +25,7 @@
 	},
 	"require-dev": {
 		"cebe/indent": "*",
-		"phpunit/phpunit": "^6.5 || ^7.5 || ^8.5 || ^9.4",
+		"phpunit/phpunit": "^6.5 || ^7.5 || ^8.5.14 || ^9.4",
 		"oai/openapi-specification": "3.0.3",
 		"mermade/openapi3-examples": "1.0.0",
 		"apis-guru/openapi-directory": "1.0.0",