fix(scss): replace color-adjust to print-color-adjust in _form-check.scss

- The `color-adjust` shorthand is currently deprecated.

Author: xidedix

scss/forms/_form-check.scss

@@ -27,7 +27,7 @@
   background-size: contain;
   border: $form-check-input-border;
   appearance: none;
-  color-adjust: exact; // Keep themed appearance for print
+  print-color-adjust: exact; // Keep themed appearance for print
   @include transition($form-check-transition);
 
   &[type="checkbox"] {