[sailfish-browser] Shorten UA update interval. Contributes to JB#39970
[sailfish-browser] Shorten UA update interval. Contributes to JB#39970

Shorten UA update interval to two every second day.

sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser