fix(deps): update module github.com/charmbracelet/bubbles to v2

Author: renovate[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/spechtlabs/tka
 go 1.25.5
 
 require (
-	github.com/charmbracelet/bubbles v0.21.1
+	github.com/charmbracelet/bubbles/v2 v2.0.0
 	github.com/charmbracelet/bubbletea v1.3.10
 	github.com/charmbracelet/glamour v0.10.0
 	github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834