Bump artemis_schema from 6130c39 to 84311a6 (#353)

Bumps [artemis_schema](https://github.com/INCF/artem-is) from `6130c39` to `84311a6`.
- [Release notes](https://github.com/INCF/artem-is/releases)
- [Commits](INCF/artem-is@6130c39...84311a6)

---
updated-dependencies:
- dependency-name: artemis_schema
  dependency-version: 84311a6b193f6d52bb9b879b0d8f1f1023ebee8e
  dependency-type: direct:production
...

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Author: dependabot[bot]