gms::versioned_value: don't use to_sstring_sprintf() directly
gms::versioned_value: don't use to_sstring_sprintf() directly

Signed-off-by: Vlad Zolotarov <976c0f8d0852ed6439ad273880b400a75a7c41d0@cloudius-systems.com>

scylladb/scylla,avikivity/scylla,avikivity/scylla,kjniemi/scylla,raphaelsc/scylla,duarten/scylla,raphaelsc/scylla,kjniemi/scylla,scylladb/scylla,kjniemi/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,duarten/scylla,raphaelsc/scylla