Bump vipers from 2.0.4 to 2.0.6

Bumps [vipers](https://github.com/saber-hq/vipers) from 2.0.4 to 2.0.6.
- [Release notes](https://github.com/saber-hq/vipers/releases)
- [Changelog](https://github.com/saber-hq/vipers/blob/master/CHANGELOG.md)
- [Commits](saber-hq/vipers@v2.0.4...v2.0.6)

---
updated-dependencies:
- dependency-name: vipers
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]