DO NOT MERGE: Bump vis repo to cmake4 branch

Author: ptheywood

cmake/dependencies/flamegpu2-visualiser.cmake

@@ -6,7 +6,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)
 
 # Set the visualiser repo and tag to use unless overridden by the user.
-set(DEFAULT_FLAMEGPU_VISUALISATION_GIT_VERSION "ee91d5601e846f9f06bc44608e96424b51dd5dd2")
+set(DEFAULT_FLAMEGPU_VISUALISATION_GIT_VERSION "cmake4")
 set(DEFAULT_FLAMEGPU_VISUALISATION_REPOSITORY "https://github.com/FLAMEGPU/FLAMEGPU2-visualiser.git")
 
 # Set a VISUSLAITION_ROOT cache entry so it is available in the GUI to override the location if required