Set time zone script doesn't work with macOS 11.0 Big Sur

[nec-yamashiroh]

setTimeZone.sh doesn't work with macOS 11.0 Big Sur.
The OS version format check doesn't seem to support the 11.0 version.
https://github.com/jamf/Jamf-Nation-Scripts/blob/master/setTimeZone.sh#L126-132

Please kindly confirm it.