updated new flutter version

lib/widgets/desktop/desktop_set_password.dart

@@ -177,8 +177,10 @@ class DesktopSetPasswordState extends State<DesktopSetPassword> {
               padding: EdgeInsets.only(right: 16.0, top: 16.0),
               child: Align(
                 alignment: Alignment.centerRight,
-                child: RaisedButton(
-                  color: Theme.of(context).primaryColor,
+                child: ElevatedButton(
+                  style: ElevatedButton.styleFrom(
+                    primary: Theme.of(context).primaryColor,
+                  ),
                   child: Text(
                     S.of(context).submit,
                     style: TextStyle(
@@ -276,7 +278,7 @@ class DesktopSetPasswordState extends State<DesktopSetPassword> {
               title: Text(S.of(context).success),
               content: Text(S.of(context).reset_password_success),
               actions: <Widget>[
-                FlatButton(
+                TextButton(
                   child: Text(S.of(context).ok),
                   onPressed: () {
                     Routes.router.navigateTo(context, '/login', replace: true, clearStack: false);