Bump ajv from 8.17.1 to 8.18.0

Bumps [ajv](https://github.com/ajv-validator/ajv) from 8.17.1 to 8.18.0.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](ajv-validator/ajv@v8.17.1...v8.18.0)

---
updated-dependencies:
- dependency-name: ajv
  dependency-version: 8.18.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package-lock.json

@@ -9,7 +9,7 @@
     "@swc/jest": "^0.2.39",
     "@tsconfig/node22": "^22.0.5",
     "@types/jest": "^29.5.14",
-    "ajv": "^8.17.1",
+    "ajv": "^8.18.0",
     "ajv-formats": "^3.0.1",
     "jest": "^29.7.0",
     "nhs-notify-web-template-management-utils": "^0.0.1",