Bump upstream from 08e077e to 5594c2a (#196)

Bumps [upstream](https://github.com/bazelbuild/bazel) from `08e077e` to `5594c2a`.
- [Release notes](https://github.com/bazelbuild/bazel/releases)
- [Commits](bazelbuild/bazel@08e077e...5594c2a)

---
updated-dependencies:
- dependency-name: upstream
  dependency-version: 5594c2a6cdff8713476b531f603b3d0c841b2361
  dependency-type: direct:production
...

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Author: dependabot[bot]