build: specify run_command semantics
"check" argument will change its default value to "true" in the future versions. Hence, set it explicitly to "false", to preserve current semantics.
Fixes the following warning:
WARNING: You should add the boolean check kwarg to the run_command call.
It currently defaults to false,
but it will default to true in future releases of meson.
See also: https://github.com/mesonbuild/meson/issues/9300