Update Requirements (#541)

* Update package requiremenst

* github workflow updates

* ios build updates

* Theme adjustments

* Further updates

* Fix typo

* Deprecated imperative apply of Flutter's Gradle plugins

Ref: https://docs.flutter.dev/release/breaking-changes/flutter-gradle-plugin-apply

* Refactor wedge scanner

* Add context checks

* Adjust behaviour if testing

* Further refactoring

* Moar checks

* Logic fix

* Fix for wedge scanner test

* Fix for barcode processing

* Fix

* Yet another fix

lib/widget/snacks.dart

@@ -13,7 +13,7 @@ void showSnackIcon(String text, {IconData? icon, Function()? onAction, bool? suc
   debug("showSnackIcon: '${text}'");
 
   // Escape quickly if we do not have context
-  if (!OneContext.hasContext) {
+  if (!hasContext()) {
     // Debug message for unit testing
     return;
   }