build(deps): bump golang.org/x/sys in /go/go-learn

Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.0.0-20201028215240-c5abc1b1d397 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>

go/go-learn/go.mod

@@ -2,22 +2,4 @@ module go-learn
 
 go 1.12
 
-require (
-	github.com/go-delve/delve v1.5.0 // indirect
-	github.com/gomodule/redigo v2.0.0+incompatible
-	github.com/google/go-dap v0.3.0 // indirect
-	github.com/mattn/go-colorable v0.1.8 // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
-	github.com/muesli/cache2go v0.0.0-20200423001931-a100c5aac93f
-	github.com/peterh/liner v1.2.0 // indirect
-	github.com/russross/blackfriday v2.0.0+incompatible // indirect
-	github.com/sirupsen/logrus v1.7.0 // indirect
-	github.com/spf13/cobra v1.1.1 // indirect
-	github.com/stretchr/testify v1.4.0 // indirect
-	go.starlark.net v0.0.0-20201014215153-dff0ae5b4820 // indirect
-	go.uber.org/atomic v1.5.1 // indirect
-	go.uber.org/ratelimit v0.1.0 // indirect
-	golang.org/x/arch v0.0.0-20201008161808-52c3e6f60cff // indirect
-	golang.org/x/sys v0.0.0-20201028215240-c5abc1b1d397 // indirect
-	gopkg.in/yaml.v2 v2.3.0 // indirect
-)
+require github.com/gomodule/redigo v2.0.0+incompatible