ENH: Bump ITK for Limited API support

Includes: InsightSoftwareConsortium/ITK#4541

Author: thewtex

CMakeLists.txt

@@ -89,8 +89,8 @@ if(ITKPythonPackage_SUPERBUILD)
 
   set(ITK_REPOSITORY "https://github.com/InsightSoftwareConsortium/ITK.git")
 
- # ITK release 2023-10-11
-  set(ITK_GIT_TAG "v5.4rc02")
+ # master branch, 2024-04-01
+  set(ITK_GIT_TAG "a648bd5a40776f5e7575d3cd4c19976a7ea95d97")
 
   #-----------------------------------------------------------------------------
   # A separate project is used to download ITK, so that it can reused