Merge pull request #7971 from nextcloud/backport/7969/stable31

[stable31] fix(ci): use server behat binary

Author: grnd-alt

.gitignore

@@ -5,7 +5,6 @@ css/style.css
 css/vendor.css
 cypress/videos/
 tests/integration/vendor/
-tests/integration/composer.lock
 tests/.phpunit.result.cache
 vendor/
 .php_cs.cache