Bump @speckle/viewer from 2.17.16 to 2.19.5

Bumps [@speckle/viewer](https://github.com/specklesystems/speckle-server/tree/HEAD/packages/viewer) from 2.17.16 to 2.19.5.
- [Release notes](https://github.com/specklesystems/speckle-server/releases)
- [Commits](https://github.com/specklesystems/speckle-server/commits/2.19.5/packages/viewer)

---
updated-dependencies:
- dependency-name: "@speckle/viewer"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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