feat: update datafusion dependency 47 (#1107)

* Update cargo to use DF47 release candidate

* Need to be explicit for collection of Expr due to change in dataframe API

* Add missing enum variant

* Add missing enum variants

* The interface for last_value of aggregates  upstream changed

* Cargo fmt

* last value aggregate without ordering is ill defined

* Clippy warning

* Set datafusion version to 47 now that it is released

Author: timsaucer