bump flutter (#859)

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/common/widgets/image/image_save.dart

@@ -46,7 +46,7 @@ void imageSaveDialog({
                     width: 30,
                     height: 30,
                     decoration: BoxDecoration(
-                      color: Colors.black.withOpacity(0.3),
+                      color: Colors.black.withValues(alpha: 0.3),
                       shape: BoxShape.circle,
                     ),
                     child: IconButton(

lib/common/widgets/image/image_view.dart

@@ -149,7 +149,7 @@ Widget imageView(
                       color: Theme.of(context)
                           .colorScheme
                           .onInverseSurface
-                          .withOpacity(0.4),
+                          .withValues(alpha: 0.4),
                       borderRadius: borderRadius(index),
                     ),
                     child: Center(

lib/common/widgets/image/network_img_layer.dart

@@ -88,7 +88,10 @@ class NetworkImgLayer extends StatelessWidget {
       clipBehavior: Clip.antiAlias,
       decoration: BoxDecoration(
         shape: type == ImageType.avatar ? BoxShape.circle : BoxShape.rectangle,
-        color: Theme.of(context).colorScheme.onInverseSurface.withOpacity(0.4),
+        color: Theme.of(context)
+            .colorScheme
+            .onInverseSurface
+            .withValues(alpha: 0.4),
         borderRadius:
             type == ImageType.avatar || type == ImageType.emote || radius == 0
                 ? null