chore(deps): bump ajv from 6.12.6 to 8.18.0

Bumps [ajv](https://github.com/ajv-validator/ajv) from 6.12.6 to 8.18.0.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](ajv-validator/ajv@v6.12.6...v8.18.0)

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

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

Author: dependabot[bot]

package-lock.json

@@ -41,7 +41,7 @@
   "license": "MIT",
   "dependencies": {
     "@solidity-parser/parser": "^0.20.2",
-    "ajv": "^6.12.6",
+    "ajv": "^8.18.0",
     "ajv-errors": "^1.0.1",
     "ast-parents": "^0.0.1",
     "better-ajv-errors": "^2.0.2",