chore(deps): update dependency unplugin-auto-import to v21 (#980)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -51,7 +51,7 @@
     "sass-embedded": "1.97.2",
     "semantic-release": "25.0.2",
     "typescript": "5.9.3",
-    "unplugin-auto-import": "20.3.0",
+    "unplugin-auto-import": "21.0.0",
     "unplugin-fonts": "1.4.0",
     "unplugin-vue-components": "31.0.0",
     "vite": "7.3.1",