[Release] platform_tags for macOS were not updated on verification script after increasing minimum version

[raulcd]

Describe the bug, including details regarding any error messages, version, and platform.

We increased the minimum macOS version to 10.15 and this updated the platform tag for the wheel: #38677

We forgot to update the verification script and this is only checked on the binary verification tasks which failed for 15.0.0 RC1:
https://github.com/ursacomputing/crossbow/actions/runs/7553798910/job/20565612860

We should update the platform tag to be checked on the verification script.

Component(s)

Release