deps: Update pigeon to 25.0.0, from 24.2.1

Changelog:
  https://pub.dev/packages/pigeon/changelog#2500

There's one breaking change which removes an option we don't use,
so it shouldn't affect us.

This commit is the result of running these commands:

  flutter pub upgrade --major-versions pigeon
  ./tools/check pigeon --all-files --fix

Author: rajveermalviya

android/app/src/main/kotlin/com/zulip/flutter/Notifications.g.kt

@@ -1,4 +1,4 @@
-// Autogenerated from Pigeon (v24.2.1), do not edit directly.
+// Autogenerated from Pigeon (v25.0.0), do not edit directly.
 // See also: https://pub.dev/packages/pigeon
 @file:Suppress("UNCHECKED_CAST", "ArrayInDataClass")
 

lib/host/android_notifications.g.dart

@@ -1,4 +1,4 @@
-// Autogenerated from Pigeon (v24.2.1), do not edit directly.
+// Autogenerated from Pigeon (v25.0.0), do not edit directly.
 // See also: https://pub.dev/packages/pigeon
 // ignore_for_file: public_member_api_docs, non_constant_identifier_names, avoid_as, unused_import, unnecessary_parenthesis, prefer_null_aware_operators, omit_local_variable_types, unused_shown_name, unnecessary_import, no_leading_underscores_for_local_identifiers
 

pubspec.lock

@@ -826,10 +826,10 @@ packages:
     dependency: "direct dev"
     description:
       name: pigeon
-      sha256: "1bab69b62617e5f31cf84dcab82c62aa21b7883055f0ca7ff93e76651eef8575"
+      sha256: "81a70703f015a9493d3e0d3de22d23db33f8838a44312856b3749376ba45e5d2"
       url: "https://pub.dev"
     source: hosted
-    version: "24.2.1"
+    version: "25.0.0"
   platform:
     dependency: transitive
     description:

pubspec.yaml

@@ -101,7 +101,7 @@ dev_dependencies:
   ini: ^2.1.0
   json_serializable: ^6.5.4
   legacy_checks: ^0.1.0
-  pigeon: ^24.2.1
+  pigeon: ^25.0.0
   plugin_platform_interface: ^2.1.8
   stack_trace: ^1.11.1
   test: ^1.23.1