chore(main): release 3.9.0

Release the already-merged generated SDK changes. Reviewed release-only changelog and version updates; CI checks pass.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 380ba4d9-c690-4da5-a384-5263d2f0cdf1

Author: release-please-token-provider[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-	".": "3.8.0"
+	".": "3.9.0"
 }

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [3.9.0](https://github.com/microsoftgraph/msgraph-sdk-php/compare/v3.8.0...v3.9.0) (2026-10-22)
+
+
+### Features
+
+* **generation:** update request builders and models ([#1816](https://github.com/microsoftgraph/msgraph-sdk-php/issues/1816)) ([8c322bf](https://github.com/microsoftgraph/msgraph-sdk-php/commit/8c322bf30b924028cca3653c2e73f3e04be059de))
+
 ## [3.8.0](https://github.com/microsoftgraph/msgraph-sdk-php/compare/v3.7.0...v3.8.0) (2026-10-06)
 
 

README.md

@@ -15,7 +15,7 @@ You can install the PHP SDK with Composer by editing your `composer.json` file:
 {
     "require": {
         // x-release-please-start-version
-        "microsoft/microsoft-graph": "^3.8.0"
+        "microsoft/microsoft-graph": "^3.9.0"
         // x-release-please-end
     }
 }

src/GraphConstants.php

@@ -20,6 +20,6 @@ final class GraphConstants
 {
     const API_VERSION = "v1.0";
     // x-release-please-start-version
-    const SDK_VERSION = "3.8.0";
+    const SDK_VERSION = "3.9.0";
     // x-release-please-end
 }