fix: update plist parser to handle comments (#2760)

packages/shorebird_cli/pubspec.lock

@@ -545,10 +545,10 @@ packages:
     dependency: "direct main"
     description:
       name: propertylistserialization
-      sha256: "694d5ac9e3a2e2d0fdc98d96d790de6ee272ca2209944711fdf58e82c0cab30b"
+      sha256: "645aaac37e73735286087fc81b27c7eabaa81b6146881bdf84090ba56f4e15ad"
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.0"
+    version: "1.4.1"
   pub_semver:
     dependency: "direct main"
     description:

packages/shorebird_cli/pubspec.yaml

@@ -33,7 +33,7 @@ dependencies:
   pem: ^2.0.5
   platform: ^3.1.6
   pointycastle: ^3.9.1
-  propertylistserialization: ^1.3.0
+  propertylistserialization: ^1.4.1
   pub_semver: ^2.1.5
   pubspec_parse: ^1.5.0
   retry: ^3.1.2