Update the assets for the "Privacy pool" dev wallet site

[Pavinzel]

We need to update the "https://dev-platform.ligetron.com/Verifiable_Credentials/wallet" site to be in line with recent "Privacy pool" relayer script changes.
Asset files that contain the latest changes can be found on the "privacy_pool_db_merge" branch of the "zkplatform" repo.

[khancoder282]

I have updated the asset files of the privacy pool.

[Pavinzel]

Asset files are updated to the include last 2 features on "privacy_pool_signed_multi_input" branch of "zkplatform" repository.
Please update site assets to their version on that branch.