arrow

MINOR: [Go][CI][Benchmarking] Add timeout to go benchmarks (#14982)

As mentioned by @ kou here: https://github.com/apache/arrow/pull/14952#issuecomment-1352401925 it looks like we crossed a threshold on the Go benchmarks and have added enough benchmarks for the Compute module that they are collectively taking more than 10m to run (which is the default timeout). So this updates the timeout used for running the benchmarks to 20 minutes.

CC @ austin3dickey 

Authored-by: Matt Topol <zotthewizard@gmail.com>
Signed-off-by: Matt Topol <zotthewizard@gmail.com>