Do outdoor post lighting need to be GFCI

Location
Minnesota USA
Occupation
Master Electrician
Hello,

I have about 1000 feet of existing 10/2 for post lighting on a dedicated 20 amp breaker if I insure all new cables that I splice on to get up into the sauna tube and post are 24 inch deep in ground do I have to GFCI this circuit I really don’t want to because of tripping.

Thanks
 
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