Change timeout to 8 seconds for consistency with other tests.

cmake/cppcheck.cmake

@@ -51,5 +51,5 @@ function(ADD_TEST_CPPCHECK)
     "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
   add_test(NAME ${ARGS_NAME}
     COMMAND "${CPPCHECK_COMMAND}" ${CPPCHECK_ARGUMENTS} ${ARGS_UNPARSED_ARGUMENTS})
-  set_tests_properties(${ARGS_NAME} PROPERTIES TIMEOUT 10.0)
+  set_tests_properties(${ARGS_NAME} PROPERTIES TIMEOUT 8.0)
 endfunction()