style: dropdown select has incorrect height applied

[pixelflips]

Description

The dropdown select variant has a height applied to help match other inputs, but it should be updated to min-height since this variant allows items to have custom content.

Updates fixed height to min-height to eliminate the issue.

Screenshots

Before	After

Testing in sage-lib

Navigate to Dropdown
Verify select variant updates properly when selecting an option.

Testing in kajabi-products

1. (LOW) Adjusted the height of the dropdown select variant.
   • Coaching >> Group Coaching >> Scheduling (Scheduling preference dropdown.)

Related

https://kajabi.atlassian.net/browse/DSS-1138