feat(deps): bump github.com/alecthomas/kong from 0.8.0 to 0.8.1

Bumps [github.com/alecthomas/kong](https://github.com/alecthomas/kong) from 0.8.0 to 0.8.1.
- [Commits](alecthomas/kong@v0.8.0...v0.8.1)

---
updated-dependencies:
- dependency-name: github.com/alecthomas/kong
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -3,7 +3,7 @@ module github.com/charmbracelet/gum
 go 1.18
 
 require (
-	github.com/alecthomas/kong v0.8.0
+	github.com/alecthomas/kong v0.8.1
 	github.com/alecthomas/mango-kong v0.1.0
 	github.com/charmbracelet/bubbles v0.16.1
 	github.com/charmbracelet/bubbletea v0.24.2

go.sum

@@ -1,8 +1,8 @@
 github.com/alecthomas/assert/v2 v2.2.1 h1:XivOgYcduV98QCahG8T5XTezV5bylXe+lBxLG2K2ink=
 github.com/alecthomas/chroma/v2 v2.7.0 h1:hm1rY6c/Ob4eGclpQ7X/A3yhqBOZNUTk9q+yhyLIViI=
 github.com/alecthomas/chroma/v2 v2.7.0/go.mod h1:yrkMI9807G1ROx13fhe1v6PN2DDeaR73L3d+1nmYQtw=
-github.com/alecthomas/kong v0.8.0 h1:ryDCzutfIqJPnNn0omnrgHLbAggDQM2VWHikE1xqK7s=
-github.com/alecthomas/kong v0.8.0/go.mod h1:n1iCIO2xS46oE8ZfYCNDqdR0b0wZNrXAIAqro/2132U=
+github.com/alecthomas/kong v0.8.1 h1:acZdn3m4lLRobeh3Zi2S2EpnXTd1mOL6U7xVml+vfkY=
+github.com/alecthomas/kong v0.8.1/go.mod h1:n1iCIO2xS46oE8ZfYCNDqdR0b0wZNrXAIAqro/2132U=
 github.com/alecthomas/mango-kong v0.1.0 h1:iFVfP1k1K4qpml3JUQmD5I8MCQYfIvsD9mRdrw7jJC4=
 github.com/alecthomas/mango-kong v0.1.0/go.mod h1:t+TYVdsONUolf/BwVcm+15eqcdAj15h4Qe9MMFAwwT4=
 github.com/alecthomas/repr v0.2.0 h1:HAzS41CIzNW5syS8Mf9UwXhNH1J9aix/BvDRf1Ml2Yk=