Merge branch 'add/php-8.1' into 'main'

Add PHP 8.1

See merge request !17

plugins/templates/matrix.yml

@@ -60,11 +60,20 @@ PHPunit:PHP8.0:MySQL:
   script:
     - find . -type "f" -iname "*.php" | xargs -L "1" php -l
     - phpunit
+
+PHPunit:PHP8.1:MySQL:
+  stage: test
+  image: containers.ethitter.com:443/docker/images/php:8.1
+  services:
+    - mysql:5.6
+  script:
+    - find . -type "f" -iname "*.php" | xargs -L "1" php -l
+    - phpunit
   allow_failure: true
 
 PHPCS:
   stage: test
-  image: containers.ethitter.com:443/docker/images/php:7.3
+  image: containers.ethitter.com:443/docker/images/php:7.4
   before_script:
     - composer global require automattic/vipwpcs
     - composer global require phpcompatibility/phpcompatibility-wp