use latest os version by default rather than fix version
use latest os version by default rather than fix version

segmentio/analytics-ios,djfink-carglass/analytics-ios,djfink-carglass/analytics-ios,segmentio/analytics-ios,string-team/analytics-ios,string-team/analytics-ios,segmentio/analytics-ios,djfink-carglass/analytics-ios,string-team/analytics-ios,segmentio/analytics-ios