Update module github.com/charmbracelet/bubbletea to v2

Author: renovate[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/cego/gitte
 go 1.25.0
 
 require (
-	github.com/charmbracelet/bubbletea v1.3.10
+	github.com/charmbracelet/bubbletea/v2 v2.0.5
 	github.com/charmbracelet/lipgloss v1.1.0
 	github.com/goccy/go-yaml v1.19.2
 	github.com/joho/godotenv v1.5.1