Adds unnecessary_import to linter ignore list in generated dart tests (#2293)

Author: bparrishMines

packages/pigeon/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 3.2.3
+
+* Adds `unnecessary_import` to linter ignore list in generated dart tests.
+
 ## 3.2.2
 
 * Adds `unnecessary_import` to linter ignore list for `package:flutter/foundation.dart`.

packages/pigeon/lib/dart_generator.dart

@@ -603,7 +603,7 @@ void generateTestDart(
   indent.writeln('// $generatedCodeWarning');
   indent.writeln('// $seeAlsoWarning');
   indent.writeln(
-    '// ignore_for_file: public_member_api_docs, non_constant_identifier_names, avoid_as, unused_import, unnecessary_parenthesis',
+    '// ignore_for_file: public_member_api_docs, non_constant_identifier_names, avoid_as, unused_import, unnecessary_parenthesis, unnecessary_import',
   );
   indent.writeln('// ignore_for_file: avoid_relative_lib_imports');
   indent.writeln('import \'dart:async\';');

packages/pigeon/lib/generator_tools.dart

@@ -9,7 +9,7 @@ import 'dart:mirrors';
 import 'ast.dart';
 
 /// The current version of pigeon. This must match the version in pubspec.yaml.
-const String pigeonVersion = '3.2.2';
+const String pigeonVersion = '3.2.3';
 
 /// Read all the content from [stdin] to a String.
 String readStdin() {

packages/pigeon/pubspec.yaml

@@ -2,7 +2,7 @@ name: pigeon
 description: Code generator tool to make communication between Flutter and the host platform type-safe and easier.
 repository: https://github.com/flutter/packages/tree/main/packages/pigeon
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Apigeon
-version: 3.2.2 # This must match the version in lib/generator_tools.dart
+version: 3.2.3 # This must match the version in lib/generator_tools.dart
 
 environment:
   sdk: ">=2.12.0 <3.0.0"