Release Gateway 1.6.1

[wojcik91]

Prepare and release a new version with dependency updates to resolve a CVE

[wojcik91]

There's no fixed version as of now and the mullvad team intends to fix it in the upcoming weeks: mullvad/mnl-rs#15

[wojcik91]

https://github.com/DefGuard/gateway/releases/tag/v1.6.1