Prepare changelogs for upcoming release

Author: urfeex

ur_simulation_gz/CHANGELOG.rst

@@ -2,6 +2,13 @@
 Changelog for package ur_simulation_gz
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+Forthcoming
+-----------
+* Add launch support for UR8 Long (`#111 <https://github.com/UniversalRobots/Universal_Robots_ROS2_GZ_Simulation/issues/111>`_)
+* Add configuration file to docs (`#107 <https://github.com/UniversalRobots/Universal_Robots_ROS2_GZ_Simulation/issues/107>`_)
+* Update installation instructions in docs (`#105 <https://github.com/UniversalRobots/Universal_Robots_ROS2_GZ_Simulation/issues/105>`_)
+* Contributors: Felix Exner, URJala
+
 2.3.0 (2025-05-21)
 ------------------
 * Add support for UR15 (`#97 <https://github.com/UniversalRobots/Universal_Robots_ROS2_GZ_Simulation/issues/97>`_)