fix: adjust to gocron v2

go.mod

@@ -4,7 +4,6 @@ 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 v2.22.0
 	gopkg.in/yaml.v3 v3.0.1
 )
@@ -13,10 +12,10 @@ require (
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/jandelgado/gcov2lcov v1.1.1 // indirect
+	github.com/jonboulle/clockwork v0.5.0 // indirect
+	github.com/kr/pretty v0.3.1 // 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
 	golang.org/x/lint v0.0.0-20241112194109-818c5a804067 // indirect
 	golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7 // indirect
 )