Update release version to 9.3.0 (#1028)

AlmostMatt · web-flow · commit 912e979765f4 · 2022-07-19T12:07:30.000-04:00
diff --git a/cpp_sdk_version.json b/cpp_sdk_version.json
@@ -1,5 +1,5 @@
 {
-  "released": "9.2.0",
-  "stable": "9.2.0",
-  "head": "9.2.0"
+  "released": "9.3.0",
+  "stable": "9.3.0",
+  "head": "9.3.0"
 }
diff --git a/release_build_files/readme.md b/release_build_files/readme.md
@@ -634,7 +634,7 @@ workflow use only during the development of your app, not for publicly shipping
 code.
 
 ## Release Notes
-### Upcoming Changes
+### 9.3.0
 -   Changes
     - General (Android,Linux): Fixed a concurrency bug where waiting for an
       event with a timeout could occasionally return prematurely, as if the
