DropdownMenuNav: Add pharos-elevation-level-3 token (#670)

* fix(dropdown-menu-nav): add elevation 3 to dropdown-menu-nav

* add changeset

* fix(dropdown-menu): add elevation 3 to dropdown-menu

Author: mtorres3

.changeset/gentle-onions-dance.md

@@ -0,0 +1,5 @@
+---
+"@ithaka/pharos": patch
+---
+
+Hotfix/dropdown-menu-nav: Add pharos-elevation-level-3 token to dropdown-menu-nav

packages/pharos/src/components/dropdown-menu/pharos-dropdown-menu.scss

@@ -21,6 +21,7 @@
   padding-inline-start: 0;
   border: 1px solid var(--pharos-dropdown-menu-color-border-base);
   border-radius: 2px;
+  box-shadow: var(--pharos-elevation-level-3);
   visibility: hidden;
   pointer-events: none;
   opacity: 0;