whisper example gives an error

Running the command

`cargo run --example whisper-microphone --features microphone`

gives an error

```
error[E0433]: failed to resolve: could not find `FftFixedInOut` in `rubato`
--> candle-examples/src/audio.rs:118:33
|
118 | let mut resampler = rubato::FftFixedInOut::::new(sr_in as usize, sr_out as usize, 1024, 1)
| ^^^^^^^^^^^^^ could not find `FftFixedInOut` in `rubato`
```

Start by rerunning `cargo run --example whisper-microphone --features microphone` and inspect `candle-examples/src/audio.rs` around line 118. Then check the project's `rubato` dependency declaration and its available API; done means the whisper microphone example builds and runs without the `FftFixedInOut` resolution error.

Written by the indexing model from the issue text.