The proper name for the meson options changed to meson.options in Meson
1.1. Since we don't support older versions of Meson anyway, let's just
rename the options-file to the new name.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Eric Engestrom <None>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33445>