Disable 11.x-dev tests (#323)

Author: aryaantony92

.github/ci/scripts/setup-environment.sh

@@ -13,6 +13,6 @@ mkdir var/config
 cp .github/ci/files/extensions.template.php var/config/extensions.php
 cp .github/ci/files/.env ./
 
-if [ ${DEPENDENCIES:-lowest} = "highest" ]; then
+: 'if [ ${DEPENDENCIES:-lowest} = "highest" ]; then
     composer require pimcore/pimcore:"11.x-dev as 10.99.99" --no-update
-fi
+fi'