build(deps): bump github.com/urfave/cli/v2 from 2.19.2 to 2.20.2

Bumps [github.com/urfave/cli/v2](https://github.com/urfave/cli) from 2.19.2 to 2.20.2.
- [Release notes](https://github.com/urfave/cli/releases)
- [Changelog](https://github.com/urfave/cli/blob/main/docs/CHANGELOG.md)
- [Commits](https://github.com/urfave/cli/compare/v2.19.2...v2.20.2)

---
updated-dependencies:
- dependency-name: github.com/urfave/cli/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/make-go-great/color-go v0.4.1
 	github.com/make-go-great/copy-go v0.9.0
 	github.com/make-go-great/diff-go v0.0.5
-	github.com/urfave/cli/v2 v2.19.2
+	github.com/urfave/cli/v2 v2.20.2
 )
 
 require (

go.sum

@@ -18,8 +18,8 @@ github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e h1:aoZm08cpOy4WuID//EZDgc
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/urfave/cli/v2 v2.19.2 h1:eXu5089gqqiDQKSnFW+H/FhjrxRGztwSxlTsVK7IuqQ=
-github.com/urfave/cli/v2 v2.19.2/go.mod h1:1CNUng3PtjQMtRzJO4FMXBQvkGtuYRxxiR9xMa7jMwI=
+github.com/urfave/cli/v2 v2.20.2 h1:dKA0LUjznZpwmmbrc0pOgcLTEilnHeM8Av9Yng77gHM=
+github.com/urfave/cli/v2 v2.20.2/go.mod h1:1CNUng3PtjQMtRzJO4FMXBQvkGtuYRxxiR9xMa7jMwI=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=