chore: added changeset

Author: GarthDB

.changeset/beige-hounds-invent.md

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+---
+"@adobe/spectrum-tokens": minor
+---
+
+Added action bar border color.
+
+## Design Motivation
+
+Similar to the issues reported for popovers (SDS-14251), there isn't sufficient visual contrast of action bars on top of backgrounds in dark theme when used on background-color-layer-2.
+
+The solution to this issue in both popovers and action bars should be the same (Popover update has been merged)
+
+This issue was originally reported by the React team. Attached reference images from their implementation, one without border and one with border that matches the current popover border in dark.
+
+## Token Diff
+
+_Tokens added (7):_
+
+- `action-bar-border-color`