Update upstream versions

        - alfresco-enterprise-repo:  23.4.0.28

        [skip docker_latest] until alfresco-enterprise-share triggers the build or it is built manually

pom.xml

@@ -10,11 +10,11 @@
         <groupId>org.alfresco</groupId>
         <artifactId>alfresco-enterprise-repo</artifactId>
         <relativePath>../alfresco-enterprise-repo/pom.xml</relativePath>
-        <version>23.4.0.27</version>
+        <version>23.4.0.28</version>
     </parent>
 
     <properties>
-        <dependency.alfresco-enterprise-repo.version>23.4.0.27</dependency.alfresco-enterprise-repo.version>
+        <dependency.alfresco-enterprise-repo.version>23.4.0.28</dependency.alfresco-enterprise-repo.version>
         <dependency.alfresco-enterprise-share.version>23.4.0.20</dependency.alfresco-enterprise-share.version>
 
         <alfresco.rm-enterprise-rest-api-explorer.version>3.0.2</alfresco.rm-enterprise-rest-api-explorer.version>