Prepare for 9.0.0 release (#644)

Signed-off-by: Ian Chen <ichen@openrobotics.org>

Author: iche033

CMakeLists.txt

@@ -16,7 +16,7 @@ find_package(gz-cmake4 REQUIRED)
 set(CMAKE_CXX_STANDARD 17)
 
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
-gz_configure_project(VERSION_SUFFIX pre1)
+gz_configure_project(VERSION_SUFFIX)
 
 #============================================================================
 # Set project-specific options

Changelog.md

@@ -1,9 +1,17 @@
 ## Gazebo GUI 9
 
-### Gazebo GUI 9.0.0 (2024-09-XX)
+### Gazebo GUI 9.0.0 (2024-09-25)
 
 1. **Baseline:** this includes all changes from 8.3.0 and earlier.
 
+1. Only set shadow texture size if configured by the user in the SDFormat file
+    * [Pull request #642](https://github.com/gazebosim/gz-gui/pull/642)
+
+1. Miscellaneous documentation fixes
+    * [Pull request #640](https://github.com/gazebosim/gz-gui/pull/640)
+    * [Pull request #639](https://github.com/gazebosim/gz-gui/pull/639)
+    * [Pull request #638](https://github.com/gazebosim/gz-gui/pull/638)
+
 1. Update badges for ionic gz-gui9
     * [Pull request #636](https://github.com/gazebosim/gz-gui/pull/636)