update ubuntu_ports url to reflect canonical's guide

data.json

@@ -174,7 +174,7 @@
     "out_of_sync_interval": 172800
   },
   "KDE": {
-    "out_of_sync_since": 1659116720,
+    "out_of_sync_since": null,
     "out_of_sync_interval": 86400,
     "csc": "kde/",
     "upstream": "https://kde.c3sl.ufpr.br/",
@@ -209,7 +209,7 @@
     "file": "dists/"
   },
   "macports": {
-    "out_of_sync_since": 1642827723,
+    "out_of_sync_since": null,
     "out_of_sync_interval": 86400,
     "csc": "MacPorts/mpdistfiles/",
     "upstream": "https://distfiles.macports.org/",
@@ -321,7 +321,7 @@
     "file": "dists/"
   },
   "raspbian": {
-    "out_of_sync_since": 1659116721,
+    "out_of_sync_since": null,
     "out_of_sync_interval": 86400,
     "csc": "raspbian/",
     "upstream": "http://archive.raspbian.org/",
@@ -374,10 +374,10 @@
     "file": ""
   },
   "ubuntu_ports": {
-    "out_of_sync_since": 1651550528,
+    "out_of_sync_since": null,
     "out_of_sync_interval": 86400,
     "csc": "ubuntu-ports/",
-    "upstream": "http://ports.ubuntu.com/ubuntu-ports/",
+    "upstream": "https://launchpad.net/ubuntu/+mirror/mirror.csclub.uwaterloo.ca-archive",
     "file": "dists/"
   },
   "ubuntu_ports_releases": {
@@ -422,4 +422,4 @@
     "upstream": "https://cdimage.ubuntu.com/xubuntu/releases/",
     "file": ""
   }
-}
+}