[ci] Only run with min and max supported Flutter SDK version (#103)

At this time, min supported Flutter SDK version is 2.10.x, and max
supported Flutter version is the latest.

.github/workflows/ci.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: '3.10.0'
+          flutter-version: '3.x'
           cache: true
       - run: flutter analyze
 
@@ -48,7 +48,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: '3.10.0'
+          flutter-version: '3.x'
           cache: true
           cache-key: 'flutter-:os:-:channel:-:version:-:arch:-:hash:' # optional, change this to force refresh cache
           cache-path: '${{ runner.tool_cache }}/flutter/:channel:-:version:-:arch:' # optional, change this to specify the cache path
@@ -59,7 +59,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: windows-2019
     steps:
       - uses: actions/checkout@v1
@@ -80,7 +80,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: macos-13
     timeout-minutes: 60
     steps:
@@ -99,8 +99,8 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
-    runs-on: macos-11
+        version: ['2.10.5', '3.x']
+    runs-on: macos-13
     timeout-minutes: 60
     steps:
       - uses: actions/checkout@v1
@@ -119,7 +119,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: windows-2019
     steps:
       - uses: actions/checkout@v1
@@ -140,7 +140,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
@@ -161,7 +161,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
@@ -182,7 +182,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
@@ -201,7 +201,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
     strategy:
       matrix:
-        version: ['2.10.5', '3.0.0', '3.3.9', '3.7.3', '3.10.0']
+        version: ['2.10.5', '3.x']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
@@ -226,7 +226,7 @@ jobs:
           java-version: '11'
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: '3.10.0' # Run the latest version
+          flutter-version: '3.x' # Run the latest version
           cache: true
       - name: windows integration test
         shell: bash
@@ -293,7 +293,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: '3.10.0' # Run the latest version
+          flutter-version: '3.x' # Run the latest version
           cache: true
       - run: flutter config --enable-macos-desktop
       - name: run macos integration test
@@ -317,7 +317,7 @@ jobs:
           java-version: '11'
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: '3.10.0' # Run the latest version
+          flutter-version: '3.x' # Run the latest version
           cache: true
       - name: run android integration test
         uses: reactivecircus/[email protected]

example/android/build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.6.10'
+    ext.kotlin_version = '1.7.0'
     repositories {
         google()
         mavenCentral()

lib/iris_method_channel_web.dart

@@ -5,6 +5,7 @@
 
 import 'package:flutter_web_plugins/flutter_web_plugins.dart';
 
+// ignore: avoid_classes_with_only_static_members
 /// A web implementation of the IrisMethodChannelPlatform of the IrisMethodChannel plugin.
 class IrisMethodChannelWeb {
   /// Constructs a IrisMethodChannelWeb