Release agentserver responses 2.1.0b2 (#48653)

Move post-2.1.0b1 fixes into a new release entry dated 2026-08-20 and bump the package version.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: bdc32ee9-9e8f-4a1c-ba27-bdfa318afa1e

Author: shanmukha1200

sdk/agentserver/azure-ai-agentserver-responses/CHANGELOG.md

@@ -1,5 +1,12 @@
 # Release History
 
+## 2.1.0b2 (2026-08-20)
+
+### Bugs Fixed
+
+- Restored JSON-string encoding for response-level `internal_metadata` so resilient response checkpoints round-trip through Foundry storage.
+- Restored `get_request_context()` identity values while stored Responses handlers run inside durable tasks.
+
 ## 2.1.0b1 (2026-08-11)
 
 ### Breaking Changes
@@ -19,11 +26,6 @@
   applications now persist cross-turn state explicitly with
   `FoundryStateStore`.
 
-### Bugs Fixed
-
-- Restored JSON-string encoding for response-level `internal_metadata` so resilient response checkpoints round-trip through Foundry storage.
-- Restored `get_request_context()` identity values while stored Responses handlers run inside durable tasks.
-
 ### Other Changes
 
 - Updated the resilient Responses samples to use conversation-scoped

sdk/agentserver/azure-ai-agentserver-responses/azure/ai/agentserver/responses/_version.py

@@ -4,4 +4,4 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # ---------------------------------------------------------
 
-VERSION = "2.1.0b1"
+VERSION = "2.1.0b2"