Bump ajv from 8.18.0 to 8.20.0

Bumps [ajv](https://github.com/ajv-validator/ajv) from 8.18.0 to 8.20.0.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](https://github.com/ajv-validator/ajv/compare/v8.18.0...v8.20.0)

---
updated-dependencies:
- dependency-name: ajv
  dependency-version: 8.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -36,7 +36,7 @@
     "@angular/material": "21.2.8",
     "@angular/platform-browser": "21.2.10",
     "@angular/router": "21.2.10",
-    "ajv": "8.18.0",
+    "ajv": "8.20.0",
     "js-yaml": "4.1.1",
     "lodash-es": "4.18.1",
     "rxjs": "7.8.2",