Upgrade dependencies; upgrade to flutter 3.22

Fix two deprecations. Don't upgrade package_info_plus as it has
breaking changes in version 6.0.0 by requiring Java 17:
https://pub.dev/packages/package_info_plus/changelog
and that seems to be not yet available for our integration test running
on github actions

lib/widgets/main_drawer.dart

@@ -173,9 +173,9 @@ class CategoryTile extends ConsumerWidget {
               child: TextButton(
                   style: ButtonStyle(
                       alignment: Alignment.centerLeft,
-                      shape: const MaterialStatePropertyAll(
+                      shape: const WidgetStatePropertyAll(
                           RoundedRectangleBorder()),
-                      backgroundColor: MaterialStatePropertyAll(
+                      backgroundColor: WidgetStatePropertyAll(
                           (englishName == _page)
                               ? Theme.of(context).focusColor
                               : null)),