ENGCOM-9332: Tailwindui css layout support - colon is not accepted by the pattern #34559

 - Merge Pull Request #34559 from in-session/magento2:patch-9
 - Merged commits:
   1. 34115de

Author: magento-engcom-team

lib/internal/Magento/Framework/View/Layout/etc/elements.xsd

@@ -119,7 +119,7 @@
 
     <xs:simpleType name="htmlClassType">
         <xs:restriction base="xs:string">
-            <xs:pattern value="[a-zA-Z][a-zA-Z\d\-_]*(\s[a-zA-Z][a-zA-Z\d\-_]*)*"/>
+            <xs:pattern value="[a-zA-Z][a-zA-Z\d\-_:]*(\s[a-zA-Z][a-zA-Z\d\-_:]*)*"/>
         </xs:restriction>
     </xs:simpleType>