build: go 1.24

We were running behind and there were quite some deprecations to update.
This was mostly in the upstream copy/pasta package but seems quite
minimal.

vendor/github.com/charmbracelet/x/cellbuf/style.go

@@ -0,0 +1,31 @@
+package cellbuf
+
+import (
+	"github.com/charmbracelet/colorprofile"
+)
+
+// Convert converts a style to respect the given color profile.
+func ConvertStyle(s Style, p colorprofile.Profile) Style {
+	switch p {
+	case colorprofile.TrueColor:
+		return s
+	case colorprofile.Ascii:
+		s.Fg = nil
+		s.Bg = nil
+		s.Ul = nil
+	case colorprofile.NoTTY:
+		return Style{}
+	}
+
+	if s.Fg != nil {
+		s.Fg = p.Convert(s.Fg)
+	}
+	if s.Bg != nil {
+		s.Bg = p.Convert(s.Bg)
+	}
+	if s.Ul != nil {
+		s.Ul = p.Convert(s.Ul)
+	}
+
+	return s
+}