fix(ci): add composer.lock for tests/integration

Signed-off-by: grnd-alt <git@belakkaf.net>

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