Bump golang.org/x/sys in /tool
Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.0.0-20191210023423-ac6580df4449 to 0.1.0.
- [Release notes](https://github.com/golang/sys/releases)
- [Commits](https://github.com/golang/sys/commits/v0.1.0)
---
updated-dependencies:
- dependency-name: golang.org/x/sys
dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>