[Python] Wheels broken after ARROW-6860 changes

[asfimport]

I forgot to handle the .so bundling issues.

Reporter: Wes McKinney / @wesm
Assignee: Wes McKinney / @wesm

PRs and other links:

• GitHub Pull Request #5673

_{Note: This issue was originally created as ARROW-6903. Please see the migration documentation for further details.}

[asfimport]

Antoine Pitrou / @pitrou:
Issue resolved by pull request 5673
#5673