core-management, add Region.CHINA_NORTH3 and CHINA_EAST3 (Azure#28277)

* core mgmt, add new Region.CHINA_NORTH3

* add CHINA_EAST3

Author: weidongxu-microsoft

sdk/core/azure-core-management/CHANGELOG.md

@@ -4,6 +4,8 @@
 
 ### Features Added
 
+- Added new Azure region `Region.CHINA_NORTH3` and `Region.CHINA_EAST3` for Azure China.
+
 ### Breaking Changes
 
 ### Bugs Fixed

sdk/core/azure-core-management/src/main/java/com/azure/core/management/Region.java

@@ -221,6 +221,14 @@ public final class Region {
      * China East 2
      */
     public static final Region CHINA_EAST2 = new Region("chinaeast2", "China East 2");
+    /**
+     * China North 3
+     */
+    public static final Region CHINA_NORTH3 = new Region("chinanorth3", "China North 3");
+    /**
+     * China East 3
+     */
+    public static final Region CHINA_EAST3 = new Region("chinaeast3", "China East 3");
     /*
      * Azure German Cloud
      */