security/netbird: update to 0.56.0

Changelogs: https://github.com/netbirdio/netbird/releases/tag/v0.56.0
Commit log: https://github.com/netbirdio/netbird/compare/v0.55.1...v0.56.0

PR: 289367
Reported by: Hakan Sarıman <hakan.external@netbird.io> (maintainer)