Update dependency eslint-plugin-lit-a11y to v5

Author: renovate[bot]

package-lock.json

@@ -39,7 +39,7 @@
     "eslint-plugin-html": "^8.1.2",
     "eslint-plugin-import": "^2.31.0",
     "eslint-plugin-lit": "^1.15.0",
-    "eslint-plugin-lit-a11y": "^4.1.4",
+    "eslint-plugin-lit-a11y": "^5.0.0",
     "eslint-plugin-no-only-tests": "^3.3.0",
     "eslint-plugin-wc": "^2.2.0",
     "gh-pages": "^6.3.0",