feat: update to go modules

vendor/github.com/alecthomas/chroma/formatters/tty_truecolour.go

@@ -1,38 +0,0 @@
-package formatters
-
-import (
-	"fmt"
-	"io"
-
-	"github.com/alecthomas/chroma"
-)
-
-// TTY16m is a true-colour terminal formatter.
-var TTY16m = Register("terminal16m", chroma.FormatterFunc(trueColourFormatter))
-
-func trueColourFormatter(w io.Writer, style *chroma.Style, it chroma.Iterator) error {
-	for token := it(); token != chroma.EOF; token = it() {
-		entry := style.Get(token.Type)
-		if !entry.IsZero() {
-			out := ""
-			if entry.Bold == chroma.Yes {
-				out += "\033[1m"
-			}
-			if entry.Underline == chroma.Yes {
-				out += "\033[4m"
-			}
-			if entry.Colour.IsSet() {
-				out += fmt.Sprintf("\033[38;2;%d;%d;%dm", entry.Colour.Red(), entry.Colour.Green(), entry.Colour.Blue())
-			}
-			if entry.Background.IsSet() {
-				out += fmt.Sprintf("\033[48;2;%d;%d;%dm", entry.Background.Red(), entry.Background.Green(), entry.Background.Blue())
-			}
-			fmt.Fprint(w, out)
-		}
-		fmt.Fprint(w, token.Value)
-		if !entry.IsZero() {
-			fmt.Fprint(w, "\033[0m")
-		}
-	}
-	return nil
-}