Regenerate types and update @polkadot dependencies

[ebma]

Closes #2.

What I did

• Bump the polkadot dependencies to the latest version found here.
• Run yarn update-metadata to update the local metadata files. This command will run this script which by default queries the metadata from Foucoco. This is okay as we generally assume that Foucoco receives the updates first which are later rolled out also on the other chains. So by choosing Foucoco, we'll always have the very latest metadata and thus type info available.
• Run yarn build to try and generate the new types based on the new metadata. This command fails at first because we manually need to change something afterward. The error message will tell us what conflicts we need to solve.

In this case, we get the following errors:

types/src/registry/pendulum.ts:283:5 - error TS2717: Subsequent property declarations must have the same type.  Property 'SpacewalkPrimitivesCurrencyId' must be of type 'SpacewalkPrimitivesCurrencyId', but here has type 'SpacewalkPrimitivesCurrencyId'.

283     SpacewalkPrimitivesCurrencyId: SpacewalkPrimitivesCurrencyId;
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  types/src/registry/interfaces.ts:1093:5
    1093     SpacewalkPrimitivesCurrencyId: SpacewalkPrimitivesCurrencyId;
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    'SpacewalkPrimitivesCurrencyId' was also declared here.

types/src/registry/pendulum.ts:291:5 - error TS2717: Subsequent property declarations must have the same type.  Property 'SpacewalkPrimitivesVaultCurrencyPair' must be of type 'SpacewalkPrimitivesVaultCurrencyPair', but here has type 'SpacewalkPrimitivesVaultCurrencyPair'.

291     SpacewalkPrimitivesVaultCurrencyPair: SpacewalkPrimitivesVaultCurrencyPair;
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  types/src/registry/interfaces.ts:1094:5
    1094     SpacewalkPrimitivesVaultCurrencyPair: SpacewalkPrimitivesVaultCurrencyPair;
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    'SpacewalkPrimitivesVaultCurrencyPair' was also declared here.

types/src/registry/pendulum.ts:292:5 - error TS2717: Subsequent property declarations must have the same type.  Property 'SpacewalkPrimitivesVaultId' must be of type 'SpacewalkPrimitivesVaultId', but here has type 'SpacewalkPrimitivesVaultId'.

292     SpacewalkPrimitivesVaultId: SpacewalkPrimitivesVaultId;
        ~~~~~~~~~~~~~~~~~~~~~~~~~~

  types/src/registry/interfaces.ts:1095:5
    1095     SpacewalkPrimitivesVaultId: SpacewalkPrimitivesVaultId;
             ~~~~~~~~~~~~~~~~~~~~~~~~~~
    'SpacewalkPrimitivesVaultId' was also declared here.

This is because the types we define for the vault registry here are not matching the rest of the metadata anymore as they don't contain the new 'Token' type. That's why we follow this note in the README and copy the generated values from the lookup file here back into vaultRegistry.ts. The type issue is now fixed and we can run yarn build again to rebuild also the rest of the files.