build(deps): bump github.com/jsonnet-bundler/jsonnet-bundler in /scripts (#2493)

Bumps [github.com/jsonnet-bundler/jsonnet-bundler](https://github.com/jsonnet-bundler/jsonnet-bundler) from 0.5.1 to 0.6.0.
- [Release notes](https://github.com/jsonnet-bundler/jsonnet-bundler/releases)
- [Changelog](https://github.com/jsonnet-bundler/jsonnet-bundler/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jsonnet-bundler/jsonnet-bundler/compare/v0.5.1...v0.6.0

)

---
updated-dependencies:
- dependency-name: github.com/jsonnet-bundler/jsonnet-bundler
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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