Some special characters in the password are not supported

### Is there an existing issue for this?

- [X] I have searched the existing issues

### OS/Web Information

- Web Browser: Google Chrome
- Local OS: Windows 11
- Remote OS: Ubuntu 22.04 server
- Remote Architecture: x86
- `code-server --version`: 4.22.1

### Steps to Reproduce

1. Set the password as `"supersecret^"` in `~/.config/code-server/config.yaml`
2. Restart code-server by running `sudo systemctl restart code-server@$USER`
3. Login in code-server web using the password `supersecret^`.
4. Expect that the password is incorrect.

### Expected

The password is expected to be correct.

### Actual

The password is incorrect.

### Logs

_No response_

### Screenshot/Video

_No response_

### Does this bug reproduce in native VS Code?

This cannot be tested in native VS Code

### Does this bug reproduce in GitHub Codespaces?

This cannot be tested in GitHub Codespaces

### Are you accessing code-server over a secure context?

- [X] I am using a secure context.

### Notes

If this is not a bug, it would be nice to make the password requirements explicitly indicated in the docs.