Merge pull request #5069 from mueller-contria/5068-allowed_iframe_sources_in_phpunit_xml

Add ALLOWED_IFRAME_SOURCES to phpunit.xml

Author: ssddanbrown

phpunit.xml

@@ -13,6 +13,7 @@
     <server name="APP_AUTO_LANG_PUBLIC" value="true"/>
     <server name="APP_URL" value="http://bookstack.dev"/>
     <server name="ALLOWED_IFRAME_HOSTS" value=""/>
+    <server name="ALLOWED_IFRAME_SOURCES" value="https://*.draw.io https://*.youtube.com https://*.youtube-nocookie.com https://*.vimeo.com"/>
     <server name="ALLOWED_SSR_HOSTS" value="*"/>
     <server name="CACHE_DRIVER" value="array"/>
     <server name="SESSION_DRIVER" value="array"/>