Update packages and CI to Dart 3.9 (#244)

Author: parlough

.github/workflows/dart.yml

@@ -39,23 +39,23 @@ jobs:
       - name: mono_repo self validate
         run: dart pub global run mono_repo generate --validate
   job_002:
-    name: "analyzer_and_format; Dart 3.8.0; PKGS: pkgs/analysis_defaults, pkgs/dash_design, pkgs/excerpter, pkgs/inject_dartpad; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
+    name: "analyzer_and_format; Dart 3.9.0; PKGS: pkgs/analysis_defaults, pkgs/dash_design, pkgs/excerpter, pkgs/inject_dartpad; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
         with:
           path: "~/.pub-cache/hosted"
-          key: "os:ubuntu-latest;pub-cache-hosted;sdk:3.8.0;packages:pkgs/analysis_defaults-pkgs/dash_design-pkgs/excerpter-pkgs/inject_dartpad;commands:format-analyze"
+          key: "os:ubuntu-latest;pub-cache-hosted;sdk:3.9.0;packages:pkgs/analysis_defaults-pkgs/dash_design-pkgs/excerpter-pkgs/inject_dartpad;commands:format-analyze"
           restore-keys: |
-            os:ubuntu-latest;pub-cache-hosted;sdk:3.8.0;packages:pkgs/analysis_defaults-pkgs/dash_design-pkgs/excerpter-pkgs/inject_dartpad
-            os:ubuntu-latest;pub-cache-hosted;sdk:3.8.0
+            os:ubuntu-latest;pub-cache-hosted;sdk:3.9.0;packages:pkgs/analysis_defaults-pkgs/dash_design-pkgs/excerpter-pkgs/inject_dartpad
+            os:ubuntu-latest;pub-cache-hosted;sdk:3.9.0
             os:ubuntu-latest;pub-cache-hosted
             os:ubuntu-latest
       - name: Setup Dart SDK
         uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
         with:
-          sdk: "3.8.0"
+          sdk: "3.9.0"
       - id: checkout
         name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
@@ -185,23 +185,23 @@ jobs:
         if: "always() && steps.pkgs_inject_dartpad_pub_upgrade.conclusion == 'success'"
         working-directory: pkgs/inject_dartpad
   job_004:
-    name: "unit_test; Dart 3.8.0; PKG: pkgs/excerpter; `dart test`"
+    name: "unit_test; Dart 3.9.0; PKG: pkgs/excerpter; `dart test`"
     runs-on: ubuntu-latest
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
         with:
           path: "~/.pub-cache/hosted"
-          key: "os:ubuntu-latest;pub-cache-hosted;sdk:3.8.0;packages:pkgs/excerpter;commands:test"
+          key: "os:ubuntu-latest;pub-cache-hosted;sdk:3.9.0;packages:pkgs/excerpter;commands:test"
           restore-keys: |
-            os:ubuntu-latest;pub-cache-hosted;sdk:3.8.0;packages:pkgs/excerpter
-            os:ubuntu-latest;pub-cache-hosted;sdk:3.8.0
+            os:ubuntu-latest;pub-cache-hosted;sdk:3.9.0;packages:pkgs/excerpter
+            os:ubuntu-latest;pub-cache-hosted;sdk:3.9.0
             os:ubuntu-latest;pub-cache-hosted
             os:ubuntu-latest
       - name: Setup Dart SDK
         uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
         with:
-          sdk: "3.8.0"
+          sdk: "3.9.0"
       - id: checkout
         name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683

pkgs/analysis_defaults/pubspec.yaml

@@ -3,7 +3,7 @@ description: Analysis defaults for Dart/Flutter site tools.
 publish_to: none
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.9.0
 
 # NOTE: Code isn't allowed in this package.
 # Don't add dependencies besides the underlying lints package.

pkgs/dash_design/pubspec.yaml

@@ -5,7 +5,7 @@ publish_to: none
 repository: https://github.com/dart-lang/site-shared/tree/main/pkgs/dash_design
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.9.0
 
 dev_dependencies:
   analysis_defaults:

pkgs/excerpter/pubspec.yaml

@@ -5,7 +5,7 @@ publish_to: none
 repository: https://github.com/dart-lang/site-shared/tree/main/pkgs/excerpter
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.9.0
 
 dependencies:
   args: ^2.6.0

pkgs/inject_dartpad/pubspec.yaml

@@ -2,7 +2,7 @@ name: inject_dartpad
 publish_to: none
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.9.0
 
 dependencies:
   html_unescape: ^2.0.0