Adding dependencies that have already been added

[fryeb]

In the Cleaning Up section of Tutorial 5 currently reads ```

For convenience, let's pull our texture code into its own module. 
We'll add the [anyhow](https://docs.rs/anyhow/) crate to our Cargo.toml file to simplify error handling. 
We'll also add the [bytemuck](https://docs.rs/bytemuck) crate to help pass mesh data to wgpu.

However, anyhow is already added in the first tutorial and bytemuck is already added (with the derive feature) in the [fourth tutorial](https://sotrh.github.io/learn-wgpu/beginner/tutorial4-buffer/#the-vertex-buffer].

Solution

The simplest solution would just be to remove the lines about adding anyhow & bytemuck from tutorial 5.