Update Gmail MX record

Author: farski

dns/prx.org-hosted_zone.yml

@@ -94,11 +94,7 @@ Resources:
         # Inbound email for @prx.org, currently through Google Workspace
         - Name: !Ref Domain
           ResourceRecords:
-            - 1 ASPMX.L.GOOGLE.COM.
-            - 5 ALT1.ASPMX.L.GOOGLE.COM.
-            - 5 ALT2.ASPMX.L.GOOGLE.COM.
-            - 10 ASPMX2.GOOGLEMAIL.COM.
-            - 10 ASPMX3.GOOGLEMAIL.COM.
+            - 1 smtp.google.com.
           TTL: "3600"
           Type: MX