m134 release update (#1389)

Co-authored-by: Cynthia Jiang <[email protected]>

Author: cynthiajoan

cpp_sdk_version.json

@@ -1,5 +1,5 @@
 {
-  "released": "11.2.0",
-  "stable": "11.2.0",
-  "head": "11.2.0"
+  "released": "11.3.0",
+  "stable": "11.3.0",
+  "head": "11.3.0"
 }

release_build_files/readme.md

@@ -627,8 +627,10 @@ workflow use only during the development of your app, not for publicly shipping
 code.
 
 ## Release Notes
-### Upcoming Release
+### 11.3.0
 -   Changes
+    - General (Android): Update to Firebase Android BoM version 32.2.0.
+    - General (iOS): Update to Firebase Cocoapods version 10.12.0.
     - General (Desktop): Fixed an error loading google-services.json and
       google-services-desktop.json from paths with international characters on
       Windows.