feat(ui_storage)!: upgrade uuid dependency to ^4.0.0

[lesnitsky]

UuidFileUploadNamingPolicy and respective factory constructor FileUploadNamingPolicy.uuid now accept V4Options?, instead of Map<String, dynamic>?.

Here's an example migration:

final config = FirebaseUIStorageConfiguration(
  storage: storage,
-  namingPolicy: FileUploadNamingPolicy.uuid({ 'rng': CryptoRNG() }),
+  namingPolicy: FileUploadNamingPolicy.uuid(V4Options(null, CryptoRNG())),
);

await FirebaseUIStorage.configure(config);

Related Issues

Requested in #176

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