[Rust] Arrow `memory` made private is a breaking API change

[asfimport]

We depend on functionality in the Arrow memory module for buffer building and this was recently made private. 

 

Please make this module public again.

Reporter: Max Burke / @maxburke
Assignee: Jorge Leitão / @jorgecarleitao

PRs and other links:

• GitHub Pull Request #9270

_{Note: This issue was originally created as ARROW-11322. Please see the migration documentation for further details.}

[asfimport]

Andrew Lamb / @alamb:
@maxburke would it be possible to create a PR for this change? We can also make it too if you would like but it may take a few days.

[asfimport]

Max Burke / @maxburke:
Done: #9270

[asfimport]

Jorge Leitão / @jorgecarleitao:
Issue resolved by pull request 9270
#9270