chore(deps-dev): bump @iconify-json/heroicons-solid in /playground (#55)

Bumps [@iconify-json/heroicons-solid](https://github.com/iconify/icon-sets) from 1.2.0 to 1.2.1.
- [Commits](https://github.com/iconify/icon-sets/commits)

---
updated-dependencies:
- dependency-name: "@iconify-json/heroicons-solid"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

playground/package.json

@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "@iconify-json/heroicons": "^1.2.1",
-    "@iconify-json/heroicons-solid": "^1.2.0",
+    "@iconify-json/heroicons-solid": "^1.2.1",
     "@iconify-json/simple-icons": "^1.2.15",
     "drizzle-kit": "^0.30.0",
     "wrangler": "^3.91.0"