fix: remove X-Voip-Carrier-Sid for outbound INVITE (#88)

lib/call-session.js

@@ -380,6 +380,7 @@ class CallSession extends Emitter {
               '-X-Preferred-From-User',
               'X-Preferred-From-Host',
               '-X-Jambonz-FS-UUID',
+              '-X-Voip-Carrier-Sid',
             ],
             proxyResponseHeaders: [
               'all',