Merge pull request #383 from Vagr9K/june-2022-upgrades June 2022 upgrade cycle (Gatsby v4.17).
Update package-lock.json.
Fix @testing-library/user-event having an incorrect version set.
Migrate to GatsbyJS V3.
Update Shields.io tag image url.
Upgrade dependencies.
Fix Schema.org JSONLD schema. Fixes #74.