rusticl: silence clippy::arc-with-non-send-sync for now

Allows compilation with newer clippy

Cc: mesa-stable
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26764>

src/gallium/frontends/rusticl/meson.build

@@ -90,6 +90,8 @@ rusticl_args = [
   '-Aclippy::redundant_field_names',
   '-Aclippy::too_many_arguments',
   '-Aclippy::type_complexity',
+  # Needs to be fixed
+  '-Aclippy::arc-with-non-send-sync',
 ]
 
 if with_platform_x11