Add support for google provider 6.x (#2536)

* Add support for google provider 6.x

Co-authored-by: Ludovico Magnocavallo <ludomagno@google.com>
Co-authored-by: Wiktor Niesiobędzki <wiktorn@google.com>
Co-authored-by: Julio Castillo <jccb@google.com>

tests/modules/cloudsql_instance/examples/simple.yaml

@@ -43,7 +43,6 @@ values:
         enable_private_path_for_google_cloud_services: null
         ipv4_enabled: false
         psc_config: []
-        require_ssl: null
       maintenance_window: []
       password_validation_policy: []
       pricing_plan: PER_USE