Force overwrite of existing keys

For automation purposes we don't want interactive prompts and it should be safe to overwrite as the key should remain the same.
```
+ mkdir -p /etc/apt/keyrings
+ curl -fsSL https://download.docker.com/linux/ubuntu/gpg
+ gpg --dearmor -o /etc/apt/keyrings/docker.gpg
File '/etc/apt/keyrings/docker.gpg' exists. Overwrite? (y/N) y
```