build(deps): bump ajv from 4.11.8 to 6.12.3

Bumps [ajv](https://github.com/ajv-validator/ajv) from 4.11.8 to 6.12.3.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](ajv-validator/ajv@4.11.8...v6.12.3)

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

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

Author: dependabot[bot]

package-lock.json

@@ -44,7 +44,7 @@
     },
     "license": "Apache-2.0",
     "dependencies": {
-        "ajv": "^4.1.7",
+        "ajv": "^6.12.3",
         "@babel/cli": "7.16.0",
         "@babel/core": "7.16.0",
         "@babel/register": "7.16.0",