v3.2.0: Enable host networking for SIP connectivity

sip-notifier/config.yaml

@@ -1,5 +1,5 @@
 name: "SIP Voice Notifier"
-version: "3.1.0"
+version: "3.2.0"
 slug: "sip-notifier"
 description: "Send voice notifications via SIP phone calls"
 arch:
@@ -11,6 +11,7 @@ arch:
 init: false
 startup: services
 boot: auto
+host_network: true
 homeassistant_api: true
 hassio_api: true
 hassio_role: default