fix(ci): Sets dependency to dev/5.3 for toolkit as the plugin separation branch has been merged.

.gitlab-ci.yml

@@ -81,7 +81,7 @@ Generate_Project:
         RUN_SETUP: "false"
         GEN_DEPENDENCIES: "(
             [master@UnrealDTrackPlugin]='https://github.com/VRGroupRWTH/UnrealDTrackPlugin.git'
-            [refactor/plugin_separation@RWTHVRToolkit]='https://git-ce.rwth-aachen.de/vr-vis/VR-Group/unreal-development/plugins/rwth-vr-toolkit.git'
+            [dev/5.3@RWTHVRToolkit]='https://git-ce.rwth-aachen.de/vr-vis/VR-Group/unreal-development/plugins/rwth-vr-toolkit.git'
             )"
 
 Generate_Project_Without_Toolkit: