wip: Update build workflow

Author: lijy91

.github/FUNDING.yml

@@ -1 +1 @@
-liberapay: lijy91
+github: lijy91

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: subosito/flutter-action@v2
         with:
           channel: stable
-          flutter-version: 3.19.6
+          flutter-version: 3.22.2
       - run: |
           sudo apt-get update -y
           sudo apt-get install -y ninja-build libgtk-3-dev libappindicator3-dev xvfb
@@ -28,7 +28,7 @@ jobs:
       - uses: subosito/flutter-action@v2
         with:
           channel: stable
-          flutter-version: 3.19.6
+          flutter-version: 3.22.2
       - run: flutter config --enable-macos-desktop
       - run: cd example &&  flutter build macos -v
       # Blocked by https://github.com/flutter/flutter/issues/118469
@@ -40,6 +40,6 @@ jobs:
       - uses: subosito/flutter-action@v2
         with:
           channel: stable
-          flutter-version: 3.19.6
+          flutter-version: 3.22.2
       - run: cd example && flutter build windows -v
       - run: cd example && flutter test integration_test -v