Update the repo for the 3.22 stable release (flutter#6730)

Does all of the steps of https://github.com/flutter/flutter/wiki/Updating-Packages-repo-for-a-stable-release other than the first (which is flutter#6727).

Author: stuartmorgan-g

.ci.yaml

@@ -292,21 +292,21 @@ targets:
     timeout: 30
     properties:
       target_file: analyze_legacy.yaml
-      channel: "3.16.9"
+      channel: "3.22.0"
       env_variables: >-
         {
-          "CHANNEL": "3.16.9"
+          "CHANNEL": "3.22.0"
         }
 
   - name: Linux analyze_legacy N-2
     recipe: packages/packages
     timeout: 30
     properties:
       target_file: analyze_legacy.yaml
-      channel: "3.13.9"
+      channel: "3.16.9"
       env_variables: >-
         {
-          "CHANNEL": "3.13.9"
+          "CHANNEL": "3.16.9"
         }
 
   - name: Linux_android custom_package_tests master

.ci/targets/repo_checks.yaml

@@ -19,7 +19,7 @@ tasks:
     script: .ci/scripts/tool_runner.sh
     args:
       - "pubspec-check"
-      - "--min-min-flutter-version=3.13.0"
+      - "--min-min-flutter-version=3.16.0"
       - "--allow-dependencies=script/configs/allowed_unpinned_deps.yaml"
       - "--allow-pinned-dependencies=script/configs/allowed_pinned_deps.yaml"
     always: true

.github/workflows/release.yml

@@ -31,7 +31,7 @@ jobs:
       # the change if it doesn't.
       run: |
         cd $HOME
-        git clone https://github.com/flutter/flutter.git --depth 1 -b 3.19.0 _flutter
+        git clone https://github.com/flutter/flutter.git --depth 1 -b 3.22.0 _flutter
         echo "$HOME/_flutter/bin" >> $GITHUB_PATH
         cd $GITHUB_WORKSPACE
     # Checks out a copy of the repo.

packages/animations/CHANGELOG.md

@@ -1,6 +1,6 @@
 ## NEXT
 
-* Updates minimum supported SDK version to Flutter 3.13/Dart 3.1.
+* Updates minimum supported SDK version to Flutter 3.16/Dart 3.2.
 
 ## 2.0.11
 

packages/animations/example/pubspec.yaml

@@ -6,8 +6,8 @@ publish_to: none
 version: 0.0.1
 
 environment:
-  sdk: ^3.1.0
-  flutter: ">=3.13.0"
+  sdk: ^3.2.0
+  flutter: ">=3.16.0"
 
 dependencies:
   animations:

packages/camera/camera/CHANGELOG.md

@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.16/Dart 3.2.
+
 ## 0.11.0
 
 * **Breaking Change** Changes the Android implementation of the camera plugin from `camera_android`

packages/camera/camera/example/pubspec.yaml

@@ -3,8 +3,8 @@ description: Demonstrates how to use the camera plugin.
 publish_to: none
 
 environment:
-  sdk: ^3.1.0
-  flutter: ">=3.13.0"
+  sdk: ^3.2.0
+  flutter: ">=3.16.0"
 
 dependencies:
   camera:

packages/camera/camera_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.16/Dart 3.2.
+
 ## 0.10.9+2
 
 * Updates `README.md` to reflect the fact that the `camera_android_camerax` camera plugin implementation

packages/camera/camera_android/example/lib/camera_controller.dart

@@ -494,7 +494,7 @@ class Optional<T> extends IterableBase<T> {
     if (_value == null) {
       throw StateError('value called on absent Optional.');
     }
-    return _value!;
+    return _value;
   }
 
   /// Executes a function if the Optional value is present.

packages/camera/camera_android/example/pubspec.yaml

@@ -3,8 +3,8 @@ description: Demonstrates how to use the camera plugin.
 publish_to: none
 
 environment:
-  sdk: ^3.1.0
-  flutter: ">=3.13.0"
+  sdk: ^3.2.0
+  flutter: ">=3.16.0"
 
 dependencies:
   camera_android: