Text on cards don't respect data-bs-theme

Created by: kusma

Prerequisites

• I have searched for duplicate or closed issues
• I have validated any HTML to avoid common problems
• I have read the contributing guidelines

Describe the issue

When setting data-bs-theme to dark on a Card, the background color changes, but not the foreground colors.

I'd expect either neither or both to change.

Reduced test cases

https://codepen.io/kusma/pen/ZEjWxyb

What operating system(s) are you seeing the problem on?

Linux

What browser(s) are you seeing the problem on?

Firefox

What version of Bootstrap are you using?

v5.3.0-alpha1