deps: Upgrade packages to latest, namely pigeon, lints, flutter_lints

This is the result of `tools/upgrade pod-major`.

All of these are dev-only dependencies, so what you see is what you
get.  The only effect of the `pigeon` upgrade is the changes below
(which are only in comments noting the version itself); and given that
the `lints` and `flutter_lints` upgrades don't cause the analyzer to
complain, there's nothing else they could do to break things.

Looking at changelogs, the linter upgrades add and remove some lints
to the list, and the Pigeon upgrade has a breaking change for Swift.

Changelogs:
  https://pub.dev/packages/pigeon/changelog
  https://pub.dev/packages/lints/changelog
  https://pub.dev/packages/flutter_lints/changelog

Author: gnprice

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

@@ -1,4 +1,4 @@
-// Autogenerated from Pigeon (v18.0.1), do not edit directly.
+// Autogenerated from Pigeon (v19.0.0), 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 (v18.0.1), do not edit directly.
+// Autogenerated from Pigeon (v19.0.0), 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

@@ -436,10 +436,10 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: "9e8c3858111da373efc5aa341de011d9bd23e2c5c5e0c62bccf32438e192d7b1"
+      sha256: "3f41d009ba7172d5ff9be5f6e6e6abb4300e263aab8866d2a0842ed2a70f8f0c"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.2"
+    version: "4.0.0"
   flutter_local_notifications:
     dependency: "direct main"
     description:
@@ -685,10 +685,10 @@ packages:
     dependency: transitive
     description:
       name: lints
-      sha256: cbf8d4b858bb0134ef3ef87841abdf8d63bfc255c266b7bf6b39daa1085c4290
+      sha256: "976c774dd944a42e83e2467f4cc670daef7eed6295b10b36ae8c85bcbf828235"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.0"
+    version: "4.0.0"
   logging:
     dependency: transitive
     description:
@@ -845,10 +845,10 @@ packages:
     dependency: "direct dev"
     description:
       name: pigeon
-      sha256: "20fe4dc59f7f9b8070f8732783fdb474d3d4dcd7674a3252230ec4d4f7070ae3"
+      sha256: "0f703377350033c955f63d3cd904a18cab42002b4a46d20348553730d65426b1"
       url: "https://pub.dev"
     source: hosted
-    version: "18.0.1"
+    version: "19.0.0"
   platform:
     dependency: transitive
     description:

pubspec.yaml

@@ -80,9 +80,9 @@ dev_dependencies:
   clock: ^1.1.1
   drift_dev: ^2.5.2
   fake_async: ^1.3.1
-  flutter_lints: ^3.0.0
+  flutter_lints: ^4.0.0
   json_serializable: ^6.5.4
-  pigeon: ^18.0.0
+  pigeon: ^19.0.0
   plugin_platform_interface: ^2.1.8
   stack_trace: ^1.11.1
   test: ^1.23.1