tutorials: need "go mod tidy"

**Describe the bug**
[`tutorials/go.mod`](./blob/main/tutorials/go.mod) needs an update of dependencies.

**To Reproduce**
```console
$ go version
go version go1.24.1 darwin/arm64
$ git clone https://github.com/charmbracelet/bubbletea.git
$ cd bubbletea
$ cd tutorials/commands
$ go run .
go: updates to go.mod needed; to update it:
	go mod tidy
```