vopono 0.10.4

Changelog:

• Fixed Wireguard custom config deserialisation - PR #194 , thanks to @noah-witt
• Removed deprecated ProtonVPN Basic plan - PR #195 , thanks to @BroderPeters
• Fixed Mullvad Wireguard config generation for new naming convention - issue #197
• vopono servers listing is now sorted
• Updated dependencies (notably clap to v4)

Note that issue #181 is still pending.