[Rust]: Fix unreproducible benchmarks

[asfimport]

Some benchmarks are unreproducible in Arrow impl. Fix them.

Reporter: Mahmut Bulut / @vertexclique
Assignee: Mahmut Bulut / @vertexclique

PRs and other links:

• GitHub Pull Request #8635

_{Note: This issue was originally created as ARROW-10551. Please see the migration documentation for further details.}

[asfimport]

Andrew Lamb / @alamb:
Issue resolved by pull request 8635
#8635