tests: add 'rust' and 'bindgen' to CI package list

tests: add 'rust' and 'bindgen' to CI package list

Although we're not enabling rust by default yet, we can still add
rust and bindgen to the CI package list.

This demonstrates that we're not accidentally triggering unexpected
build behaviour merely from Rust being present. When we do dev work
to enable rust by default, this will show we're building correctly
on all platforms we target.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Link: https://lore.kernel.org/r/20241015133925.311587-2-berrange@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>