Describe the bug

Title says it all. b-form-datepicker and b-form-timepicker 2px taller than other b-form-input's.

Steps to reproduce the bug

Add a b-form-row with b-form-datepicker and b-form-input in columns to create horizontal layout.

<b-form-row>
  <b-col lg="3">
    <b-form-datepicker/>
  </b-col>
  <b-col lg="3">
    <b-form-input/>
  </b-col>
</b-form-row>

Expected behavior

Match the same height as other inputs so they appear consistent.

Versions

Libraries:

• BootstrapVue: 2.21.1
• Bootstrap: 4.5.3
• Vue: 2.6.12

Environment:

• Device: Laptop, PC
• OS: Arch Linux, Windows 10
• Browser: Firefox, Chromium
• Version: FF 84.0.1 (64-bit), Chromium 87.0.4280.88, Chrome 87.0.4280.88