Update to go 1.23

[louisroyer]

• Wait for golang 1.23 to be packaged in Debian stable-backports
• Change https://github.com/nextmn/srv6/blob/a3121837b05b1df20472ca62e4ccc63764dbafd1/internal/tasks/registry.go#L45 to use for _, _ := range slice.Backward()
• check go version for github action workflow
• check go version for docker image