[BOM] Prepare for BOM release for September (#42137)

* prepare BOM release

* update BOM version in pom

Author: mssfang

sdk/boms/azure-sdk-bom/CHANGELOG.md

@@ -1,5 +1,15 @@
 # Release History
 
+## 1.2.28 (2024-09-30)
+
+### Dependency Updates
+
+- Added new library entries to the BOM:
+  - `azure-data-schemaregistry-jsonschema`
+  - `azure-health-deidentification`
+
+- Updated Azure SDK dependency versions to the latest releases.
+
 ## 1.2.27 (2024-08-27)
 
 ### Dependency Updates

sdk/boms/azure-sdk-bom/README.md

@@ -21,7 +21,7 @@ result in all dependencies being included in your project.
     <dependency>
       <groupId>com.azure</groupId>
       <artifactId>azure-sdk-bom</artifactId>
-      <version>1.2.27</version>
+      <version>1.2.28</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>