pyppd: Use new upstream tag format for update automation

Also update to the 1.1.1 upstream release of pyppd

Author: tillkamppeter

snap/snapcraft.yaml

@@ -524,11 +524,11 @@ parts:
   pyppd:
     source: https://github.com/OpenPrinting/pyppd
     source-type: git
-    source-tag: 'release-1-1-0'
+    source-tag: '1.1.1'
     source-depth: 1
 # ext:updatesnap
 #   version-format:
-#     format: "release-%M-%m-%R"
+#     format: "%M.%m.%R"
 #     lower-than: '2'
 #     no-9x-revisions: true
     plugin: python