chore(deps): bump @existdb/node-exist from 5.5.2 to 7.0.0

Bumps [@existdb/node-exist](https://github.com/eXist-db/node-exist) from 5.5.2 to 7.0.0.
- [Release notes](https://github.com/eXist-db/node-exist/releases)
- [Commits](eXist-db/node-exist@v5.5.2...v7.0.0)

---
updated-dependencies:
- dependency-name: "@existdb/node-exist"
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]