build(deps): bump golang.org/x/sys from 0.5.0 to 0.6.0

Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/golang/sys/releases)
- [Commits](https://github.com/golang/sys/compare/v0.5.0...v0.6.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sys
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/golang.org/x/sys/unix/syscall_openbsd.go

@@ -152,6 +152,7 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 }
 
 //sys	ioctl(fd int, req uint, arg uintptr) (err error)
+//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
 
 //sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL