feature(core): upgrade lint command

includes/tests/lint.yml

@@ -2,7 +2,7 @@
   stage: tests
   script:
     - composer install --no-dev
-    - find -name '*.php' -print0 | xargs -n1 -0 -P16 php -l >/dev/null
+    - find -name '*.php' -print0 | xargs -n1 -0 -P16 php -l 2>/dev/null
 
 lint:8.1:
   <<: *lint-tmpl