Update pa11y to version 9.0.1

Bump pa11y dev dependency from 8.1.0 to 9.0.1 for improved accessibility testing and latest features.

Author: w3bdesign

package.json

@@ -95,7 +95,7 @@
     "jest-environment-jsdom": "^30.2.0",
     "jest-extended": "^7.0.0",
     "jsdom-testing-mocks": "^1.16.0",
-    "pa11y": "^8.1.0",
+    "pa11y": "^9.0.1",
     "postcss": "^8.5.6",
     "prettier": "3.7.3",
     "tailwindcss": "^4.1.17",