Bump org.apache.tinkerpop:gremlin-driver in /modules/orientdb

Bumps [org.apache.tinkerpop:gremlin-driver](https://github.com/apache/tinkerpop) from 3.8.0 to 3.8.1.
- [Changelog](https://github.com/apache/tinkerpop/blob/master/CHANGELOG.asciidoc)
- [Commits](https://github.com/apache/tinkerpop/compare/3.8.0...3.8.1)

---
updated-dependencies:
- dependency-name: org.apache.tinkerpop:gremlin-driver
  dependency-version: 3.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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