chore(deps): bump ajv and ajv-keywords

Bumps [ajv](https://github.com/ajv-validator/ajv) and [ajv-keywords](https://github.com/epoberezkin/ajv-keywords). These dependencies needed to be updated together.

Updates `ajv` from 6.12.6 to 8.16.0
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](ajv-validator/ajv@v6.12.6...v8.16.0)

Updates `ajv-keywords` from 3.5.2 to 5.1.0
- [Release notes](https://github.com/epoberezkin/ajv-keywords/releases)
- [Commits](ajv-validator/ajv-keywords@v3.5.2...v5.1.0)

---
updated-dependencies:
- dependency-name: ajv
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: ajv-keywords
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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