Bump ajv from 8.18.0 to 8.20.0 (#5674)

Author: dependabot[bot]

package-lock.json

@@ -45,7 +45,7 @@
     "@nuxtjs/sitemap": "^2.4.0",
     "@octokit/rest": "~22.0.1",
     "a11y-dialog": "^8.1.5",
-    "ajv": "^8.18.0",
+    "ajv": "^8.20.0",
     "ajv-formats": "^3.0.1",
     "color-hash": "^2.0.2",
     "color-name-list": "^14.36.0",