Update run returns Int instead of Long

[mwisnicki]

Update#run returns an Int which is a problem when more than 2**32 rows were affected.

doobie/modules/core/src/main/scala/doobie/util/update.scala

Line 85 in 19503f0

def run(a: A): ConnectionIO[Int] =

It should be Long (using executeLargeUpdate).
This would be a breaking change, so maybe we need runLarge method it would be good to get it before 1.0 (#1728).