Disable pyrenderdoc on Apple

The python brew install does not include universal binaries
Disabling pyrenderdoc on Apple allows for the generation of universal binaries by the Apple CI

qrenderdoc/CMakeLists.txt

@@ -334,6 +334,6 @@ install (CODE "MESSAGE(\"NB: Your paths may vary.\")")
 endif() # if(ENABLE_QRENDERDOC)
 
 # Build python modules - primarily used for constructing documentation
-if(ENABLE_PYRENDERDOC AND UNIX)
+if(ENABLE_PYRENDERDOC AND UNIX AND NOT APPLE)
     add_subdirectory(Code/pyrenderdoc)
 endif()