Update bootstrap5 sass

[nblum-mdmi]

This PR addresses some strange behavior I saw around bootstrap 5 styling.

Fixes

Case 1: Border Highlight

If the classes form-select or form-control were applied to the wrapper, then the highlight box around the select would be slightly thinner than should be.

The issue was not present if form-select or form-control were not provided.

Case 2

When form-select and form-control are omitted the border only changes color when clicked, and no icon is present.

Case 3

When form-select and form-control are present, the highlight box does not appear when focused

Broken?

My changes are not perfect, as for example:

• When you have a validity class but no form-select or form-control, you won't see the icon

I don't use sass very often, so open to improvements, but figured I'd give it a first shot. Let me know what you think!