Try to run on PHP-next (8.1)

.gitlab-ci.yml

@@ -24,6 +24,18 @@ test.tests:
       # contains generated diffs
       - tests
 
+test.tests-php-next:
+  stage: test
+  dependencies: [build.composer]
+  image: grifart/php-next
+  script: composer run test
+  artifacts:
+    expire_in: 2 days
+    paths:
+      # contains generated diffs
+      - tests
+
+
 test.phpstan:
   stage: test
   dependencies: [build.composer]