chore(deps): bump @existdb/node-exist from 4.1.1 to 4.8.0

Bumps [@existdb/node-exist](https://github.com/eXist-db/node-exist) from 4.1.1 to 4.8.0.
- [Release notes](https://github.com/eXist-db/node-exist/releases)
- [Changelog](https://github.com/eXist-db/node-exist/blob/main/.releaserc)
- [Commits](eXist-db/node-exist@v4.1.1...v4.8.0)

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

Signed-off-by: dependabot[bot] <[email protected]>