Increment package versions for mongocluster releases

Author: azure-sdk

eng/versioning/version_client.txt

@@ -471,7 +471,7 @@ com.azure.resourcemanager:azure-resourcemanager-edgezones;1.0.0-beta.3;1.0.0-bet
 com.azure.resourcemanager:azure-resourcemanager-devopsinfrastructure;1.0.0;1.1.0-beta.1
 com.azure.resourcemanager:azure-resourcemanager-oracledatabase;1.2.0;1.3.0-beta.1
 com.azure.resourcemanager:azure-resourcemanager-informaticadatamanagement;1.0.0;1.1.0-beta.1
-com.azure.resourcemanager:azure-resourcemanager-mongocluster;1.1.0;1.2.0
+com.azure.resourcemanager:azure-resourcemanager-mongocluster;1.2.0;1.3.0-beta.1
 com.azure.resourcemanager:azure-resourcemanager-computefleet;1.0.0;1.1.0-beta.4
 com.azure.resourcemanager:azure-resourcemanager-servicefabricmanagedclusters;1.1.0;1.2.0-beta.1
 com.azure.resourcemanager:azure-resourcemanager-healthdataaiservices;1.0.0;1.1.0-beta.1

sdk/mongocluster/azure-resourcemanager-mongocluster/CHANGELOG.md

@@ -1,5 +1,15 @@
 # Release History
 
+## 1.3.0-beta.1 (Unreleased)
+
+### Features Added
+
+### Breaking Changes
+
+### Bugs Fixed
+
+### Other Changes
+
 ## 1.2.0 (2026-06-24)
 
 - Azure Resource Manager Mongo Cluster client library for Java. This package contains Microsoft Azure SDK for Mongo Cluster Management SDK. The Microsoft Azure management API provides create, read, update, and delete functionality for Azure Cosmos DB for MongoDB vCore resources including clusters and firewall rules. Package api-version 2026-06-01. For documentation on how to use this package, please see [Azure Management Libraries for Java](https://aka.ms/azsdk/java/mgmt).

sdk/mongocluster/azure-resourcemanager-mongocluster/pom.xml

@@ -14,7 +14,7 @@
 
   <groupId>com.azure.resourcemanager</groupId>
   <artifactId>azure-resourcemanager-mongocluster</artifactId>
-  <version>1.2.0</version> <!-- {x-version-update;com.azure.resourcemanager:azure-resourcemanager-mongocluster;current} -->
+  <version>1.3.0-beta.1</version> <!-- {x-version-update;com.azure.resourcemanager:azure-resourcemanager-mongocluster;current} -->
   <packaging>jar</packaging>
 
   <name>Microsoft Azure SDK for Mongo Cluster Management</name>