chore(deps): update docker.io/qmcgaw/gluetun docker tag to v3.39.1

[renovate]

This PR contains the following updates:

Package	Update	Change
docker.io/qmcgaw/gluetun	patch	v3.39.0 -> v3.39.1

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Release Notes

qdm12/gluetun (docker.io/qmcgaw/gluetun)

v3.39.1

Compare Source

Fixes

• Firewall: delete chain rules by line number (#​2411)
• NordVPN: remove commas from region values
• IVPN: split city into city and region
  • Fix bad city values containing a comma
  • update ivpn servers data
• Private Internet Access: support port forwarding using Wireguard (#​2420)
• ProtonVPN: prevent using FREE_ONLY and PORT_FORWARD_ONLY together (see #​2470)
• Control server: require authentication for vulnerable routes (#​2434)
• internal/storage: add missing selection fields to build noServerFoundError (see #​2470)

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