Fix timestamp_epoch value which was truncated on exceeding int32_t type limit.
Fix timestamp_epoch value which was truncated on exceeding int32_t type limit.

Signed-off-by: Vladimir Krivopalov <dc9186a06078733915a6fcbab34e59120be2b484@scylladb.com>

scylladb/scylla,duarten/scylla,avikivity/scylla,duarten/scylla,avikivity/scylla,duarten/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla