bench: set test_util as required feature for aggregate_vectorized (#19101)

## Which issue does this PR close?

N/A

## Rationale for this change

`aggregate_vectorized` bench uses arrow `test_utils` features

## What changes are included in this PR?

see title

## Are these changes tested?

yes, manually

## Are there any user-facing changes?

New feature that should not be used

Author: rluvaton

datafusion/physical-plan/Cargo.toml

@@ -39,6 +39,7 @@ workspace = true
 
 [features]
 force_hash_collisions = []
+test_utils = ["arrow/test_utils"]
 tokio_coop = []
 tokio_coop_fallback = []
 
@@ -99,3 +100,4 @@ name = "sort_preserving_merge"
 [[bench]]
 harness = false
 name = "aggregate_vectorized"
+required-features = ["test_utils"]