Release 3.12.1 (#1478)

* Release 3.12.1.

* Update otel packages.

* Update release.

Author: JacksonWeber

CHANGELOG.md

@@ -1,15 +1,11 @@
 # Release History
 
-### 3.13.0 (Unreleased)
-
-#### Features Added
-
-#### Bugs Fixed
-
-#### Breaking Changes
+### 3.12.1 (2025-11-10)
 
 #### Other Changes
 
+- Updated @azure/monitor-opentelemetry and @azure/monitor-opentelemetry-exporter.
+
 ### 3.12.0 (2025-09-29)
 
 #### Other Changes