chore: bump ai21 from 1.2.2 to 1.3.1

Bumps [ai21]() from 1.2.2 to 1.3.1.

---
updated-dependencies:
- dependency-name: ai21
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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