internal/flags: update copyright year to 2024 (#28760)

Co-authored-by: Felix Lange <fjl@twurst.com>

cmd/geth/main.go

@@ -203,7 +203,6 @@ var app = flags.NewApp("the go-ethereum command line interface")
 func init() {
 	// Initialize the CLI app and start Geth
 	app.Action = geth
-	app.Copyright = "Copyright 2013-2023 The go-ethereum Authors"
 	app.Commands = []*cli.Command{
 		// See chaincmd.go:
 		initCommand,

internal/flags/helpers.go

@@ -41,7 +41,7 @@ func NewApp(usage string) *cli.App {
 	app.EnableBashCompletion = true
 	app.Version = params.VersionWithCommit(git.Commit, git.Date)
 	app.Usage = usage
-	app.Copyright = "Copyright 2013-2023 The go-ethereum Authors"
+	app.Copyright = "Copyright 2013-2024 The go-ethereum Authors"
 	app.Before = func(ctx *cli.Context) error {
 		MigrateGlobalFlags(ctx)
 		return nil