feat: add outline style dashed to purmerend theme (#912)

Added focus `outline-style` dashed to Purmerend theme

<img width="600" alt="Screenshot 2025-01-06 at 15 19 42"
src="https://github.com/user-attachments/assets/349206c8-dea0-4414-a84c-abb2fc016589"
/>

---------

Co-authored-by: Marwa <marwahello@frameless.io>

.changeset/stale-jokes-sell.md

@@ -0,0 +1,6 @@
+---
+"@nl-design-system-unstable/basis-design-tokens": patch
+"@nl-design-system-community/purmerend-design-tokens": patch
+---
+
+Use `dashed` instead of `dotted` focus ring, because it adheres to WCAG more reliable. Some browsers render circular dots, in that case the 4px outline-width is not sufficient to achieve the minimum focus ring area.

proprietary/basis-design-tokens/figma/basis.tokens.json

@@ -1144,7 +1144,7 @@
         },
         "outline-style": {
           "$type": "other",
-          "$value": "dotted"
+          "$value": "dashed"
         },
         "outline-width": {
           "$type": "borderWidth",