refactor: to use ionosDnsClient

go.mod

@@ -3,13 +3,15 @@ module realdnydns
 go 1.25.0
 
 require (
+	gitea.t000-n.de/t.behrendt/ionosDnsClient v1.0.2
 	github.com/go-co-op/gocron v1.37.0
-	github.com/go-co-op/gocron/v2 v2.19.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
+	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/oapi-codegen/runtime v1.1.1 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
 	github.com/stretchr/testify v1.11.1 // indirect
 	go.uber.org/atomic v1.11.0 // indirect