v3.13.0 - Servers information updated

Features

• Update all hardcoded servers information, notably for Private Internet Access and Surfshark
• Update servers information with more IP addresses
• Private Internet Access custom port with environment variable PORT

Bug fixes

• Update mechanism for Private Internet Access
  • Separate TCP and UDP servers as they have different CNs
• Fallback to Alpine 3.12 for 32 bit compatibility
• Fix public IP fetching not triggering on openvpn restarts (fixing #359)
• Fix exit race condition if DNS over TLS setup would not complete
• Fix route option for PureVPN
• CLI operations context passed from top level so a system interrupt now stops the operations
• Only log a subprocess error if it's not nil

Maintenance

• Improve stream merging for openvpn and unbound
• Add panic checks for empty connection passed to firewall