Expected the format of diffdisk to be "raw", got "qcow2"

### Description

I installed colima a few days ago and it was working great until I had to restart the computer. Now colima is no longer starting and returning the error shown below. I haven't done any changes to the configuration file or changed anything in my setup. This is happening on an Macbook M2.

```
% colima start
INFO[0000] editing in vim
INFO[0085] starting colima
INFO[0085] runtime: docker
INFO[0086] starting ... context=vm
> Using the existing instance "colima"
> [hostagent] Starting VZ (hint: to watch the boot progress, see "/Users/me/.lima/colima/serial.log")
> [hostagent] new connection from to
> exiting, status={Running:false Degraded:false Exiting:true Errors:[] SSHLocalPort:0} (hint: see "/Users/me/.lima/colima/ha.stderr.log")
```

And the error in `ha.stderr.log` is:

```
{"level":"debug","msg":"Creating iso file /Users/me/.lima/colima/cidata.iso","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"Using /var/folders/qw/b3zmbngs15dgw50zrphthxx00000gn/T/diskfs_iso943522257 as workspace","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"Failed to detect CPU features. Assuming that AES acceleration is available on this Apple silicon.","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"OpenSSH version 9.0.1 detected","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"AES accelerator seems available, prioritizing aes128-gcm@openssh.com and aes256-gcm@openssh.com","time":"2023-07-09T17:03:11+02:00"}
{"level":"info","msg":"Starting VZ (hint: to watch the boot progress, see \"/Users/me/.lima/colima/serial.log\")","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"Start udp server listening on: 127.0.0.1:60808","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"Using search domains: [Home]","time":"2023-07-09T17:03:11+02:00"}
{"level":"debug","msg":"Start tcp server listening on: 127.0.0.1:57449","time":"2023-07-09T17:03:11+02:00"}
{"level":"info","msg":"new connection from to ","time":"2023-07-09T17:03:11+02:00"}
{"level":"fatal","msg":"expected the format of \"/Users/me/.lima/colima/diffdisk\" to be \"raw\", got \"qcow2\"","time":"2023-07-09T17:03:11+02:00"}
```

### Version

Colima Version: 0.5.5, git commit: 6251dc2c2c5d8197c356f0e402ad028945f0e830
Lima Version: 0.16.0
Qemu Version: 8.0.2

### Operating System

- [ ] macOS Intel <= 12 (Monterrey)
- [ ] macOS Intel >= 13 (Ventura)
- [ ] macOS M1 <= 12 (Monterrey)
- [X] macOS M1 >= 13 (Ventura)
- [ ] Linux

### Output of `colima status`

FATA[0000] colima is not running

### Reproduction Steps

1.
2.
3.

### Expected behaviour

_No response_

### Additional context

_No response_