vim: Update cmake.vim to include the CMAKE_FIND_USE variables

Auxiliary/vim/syntax/cmake.vim

@@ -948,6 +948,12 @@ syn keyword cmakeVariable contained
             \ CMAKE_FIND_ROOT_PATH_MODE_LIBRARY
             \ CMAKE_FIND_ROOT_PATH_MODE_PACKAGE
             \ CMAKE_FIND_ROOT_PATH_MODE_PROGRAM
+            \ CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH
+            \ CMAKE_FIND_USE_CMAKE_PATH
+            \ CMAKE_FIND_USE_CMAKE_SYSTEM_PATH
+            \ CMAKE_FIND_USE_PACKAGE_REGISTRY
+            \ CMAKE_FIND_USE_PACKAGE_ROOT_PATH
+            \ CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH
             \ CMAKE_FOLDER
             \ CMAKE_FRAMEWORK
             \ CMAKE_FRAMEWORK_PATH