fix(deps): update module github.com/sapcc/archer to v1.4.0

Author: renovate[bot]

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/gophercloud/utils/v2 v2.0.0-20250819195638-e4fc39f0eda4
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.37.0
 	github.com/sapcc/andromeda v1.1.1
-	github.com/sapcc/archer v1.3.1
+	github.com/sapcc/archer v1.4.0
 	github.com/sapcc/gophercloud-sapcc/v2 v2.0.5
 	github.com/sapcc/kubernikus v1.0.1-0.20250603090049-415897d6bcf8
 	github.com/terraform-provider-openstack/utils/v2 v2.0.0-20250717163156-83cd74412d2e