[core] prepare for June 2026 release (#38788)

- update release date in CHANGELOG
- add PR links

Author: jeremymeng

sdk/core/core-client-rest/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 2.6.1 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 2.6.1 (2026-06-04)
 
 ### Bugs Fixed
 
 - Fix `operationOptionsToRequestParameters` to correctly preserve `tracingOptions` in the returned `RequestParameters`. [PR #38285](https://github.com/Azure/azure-sdk-for-js/pull/38285)
 
-### Other Changes
-
 ## 2.6.0 (2026-04-07)
 
 ### Features Added

sdk/core/core-client/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 1.10.2 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 1.10.2 (2026-06-04)
 
 ### Bugs Fixed
 
 - Fixes to additional property serialization. [PR #38006](https://github.com/Azure/azure-sdk-for-js/pull/38006/)
 
-### Other Changes
-
 ## 1.10.1 (2025-09-11)
 
 ### Other Changes

sdk/core/ts-http-runtime/CHANGELOG.md

@@ -1,15 +1,11 @@
 # Release History
 
-## 0.3.6 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 0.3.6 (2026-06-04)
 
 ### Bugs Fixed
 
-- Fix an issue in `NodeHttpClient` where we incorrectly send the whole backing buffer when request body is an `ArrayBufferView`.
-- `createHttpHeaders` now strips CR (`\r`) and LF (`\n`) characters from header values to prevent obs-fold (line folding) sequences, as required by RFC 7230 §3.2.4.
+- Fix an issue in `NodeHttpClient` where we incorrectly send the whole backing buffer when request body is an `ArrayBufferView`. [PR #38718](https://github.com/Azure/azure-sdk-for-js/pull/38718)
+- `createHttpHeaders` now strips CR (`\r`) and LF (`\n`) characters from header values to prevent obs-fold (line folding) sequences, as required by RFC 7230 §3.2.4. [PR #38744](https://github.com/Azure/azure-sdk-for-js/pull/38744)
 
 ### Other Changes