Bump and fix lints, require Dart 3.1 (dart-lang/yaml_edit#95)

pkgs/yaml_edit/.github/workflows/test-package.yml

diff --git a/pkgs/yaml_edit/.github/workflows/test-package.yml b/pkgs/yaml_edit/.github/workflows/test-package.yml
index 7774cd6..32fb129 100644
--- a/pkgs/yaml_edit/.github/workflows/test-package.yml
+++ b/pkgs/yaml_edit/.github/workflows/test-package.yml
@@ -47,7 +47,7 @@
       matrix:
         # Add macos-latest and/or windows-latest if relevant for this package.
         os: [ubuntu-latest]
-        sdk: ['3.0', stable, dev]
+        sdk: ['3.1', stable, dev]
         platform: [vm, chrome]
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332

pkgs/yaml_edit/CHANGELOG.md

diff --git a/pkgs/yaml_edit/CHANGELOG.md b/pkgs/yaml_edit/CHANGELOG.md
index fd7591a..df7e3ef 100644
--- a/pkgs/yaml_edit/CHANGELOG.md
+++ b/pkgs/yaml_edit/CHANGELOG.md
@@ -12,6 +12,8 @@
   ([#41](https://github.com/dart-lang/yaml_edit/issues/41)). Resolves
   ([[#86](https://github.com/dart-lang/yaml_edit/issues/86)]).
 
+- Require Dart 3.1
+
 ## 2.2.1
 
 - Require Dart 3.0

pkgs/yaml_edit/lib/src/map_mutations.dart

diff --git a/pkgs/yaml_edit/lib/src/map_mutations.dart b/pkgs/yaml_edit/lib/src/map_mutations.dart
index 67665d9..46e8c79 100644
--- a/pkgs/yaml_edit/lib/src/map_mutations.dart
+++ b/pkgs/yaml_edit/lib/src/map_mutations.dart
@@ -96,8 +96,8 @@
 }
 
 /// Performs the string operation on [yamlEdit] to achieve the effect of adding
-/// the [key]:[newValue] pair when reparsed, bearing in mind that this is a flow
-/// map.
+/// the [keyNode]:[newValue] pair when reparsed, bearing in mind that this is a
+/// flow map.
 SourceEdit _addToFlowMap(
     YamlEditor yamlEdit, YamlMap map, YamlNode keyNode, YamlNode newValue) {
   final keyString = yamlEncodeFlow(keyNode);

pkgs/yaml_edit/lib/yaml_edit.dart

diff --git a/pkgs/yaml_edit/lib/yaml_edit.dart b/pkgs/yaml_edit/lib/yaml_edit.dart
index f4d7d75..49558b2 100644
--- a/pkgs/yaml_edit/lib/yaml_edit.dart
+++ b/pkgs/yaml_edit/lib/yaml_edit.dart
@@ -20,7 +20,7 @@
 /// ```
 ///
 /// [1]: https://yaml.org/
-library yaml_edit;
+library;
 
 export 'src/editor.dart';
 export 'src/errors.dart' show AliasException;

pkgs/yaml_edit/pubspec.yaml

diff --git a/pkgs/yaml_edit/pubspec.yaml b/pkgs/yaml_edit/pubspec.yaml
index be7139b..f7898ac 100644
--- a/pkgs/yaml_edit/pubspec.yaml
+++ b/pkgs/yaml_edit/pubspec.yaml
@@ -10,7 +10,7 @@
  - yaml
 
 environment:
-  sdk: ^3.0.0
+  sdk: ^3.1.0
 
 dependencies:
   collection: ^1.15.0
@@ -20,6 +20,6 @@
 
 dev_dependencies:
   coverage: any # we only need format_coverage, don't care what version
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   path: ^1.8.0
   test: ^1.17.12