Bump couchbase from 4.2.8 to 4.5.0

Bumps [couchbase](https://github.com/couchbase/couchnode) from 4.2.8 to 4.5.0.
- [Release notes](https://github.com/couchbase/couchnode/releases)
- [Commits](couchbase/couchnode@v4.2.8...v4.5.0)

---
updated-dependencies:
- dependency-name: couchbase
  dependency-version: 4.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]