fix: update polkadot-js deps

[TarikGul]

This updates polkadot-js to 6.0.5 which has some major changes.

Places where we were affected:

1. AccountAssetsBalances: We no longer receive the AssetBalance type but PalletAssetsAssetBalance instead which changes isSufficient -> sufficient. I made sure to account for runtimes that have either isSufficient or sufficient keys. MockApi also had to be adjusted.

2. Changed BalanceOf to u128 in the BlocksService test suite

3. The PalletsStorage service uses V12 as (asLatest) in order to get the { modules }, but now with V14 the metadata return { pallets }, this fix is to make sure the current api doesnt break. But that being said the endpoint needs to be updated to deal with V14 as well. Tracking issue here Issue #678;

[TarikGul]

Not Ready to merge as this breaks a lot of getStorage rpc calls.

Example: querying http://127.0.0.1:8080/blocks/1603025

2021-09-19 11:11:16 error: RPC-CORE: getStorage(key: StorageKey, at?: BlockHash): StorageData:: Unable to decode storage system.events:: createType(LastRuntimeUpgradeInfo):: {"specVersion":"Compact<u32>","specName":"Text"}:: Decoded input doesn't match input, received 0x1c0000000000000080e36a090000000002000000010000000000000000000000…0100000000000000000000000000000300000000008093dc1400000000000000 (209 bytes), created 0x1c00 (2 bytes)
2021-09-19 11:11:16 error: RPC-CORE: getStorage(key: StorageKey, at?: BlockHash): StorageData:: Unable to decode storage session.validators:: createType(ValidatorId):: AccountId:: Decoded input doesn't match input, received 0x15030ea81d109d526eebecfc18c680281235a4bf23fade14e838d120a2943a48…9c6bae578812080b2f9ecdef913f4f68abc3dcee697f505625e8430c8ce3122c (6306 bytes), created 0x15030ea81d109d526eebecfc18c680281235a4bf23fade14e838d120a2943a48 (32 bytes)

[dvdplm]

What does the & AugmentedConst<'promise'> part do?

[TarikGul]

So an AugmentedConst takes in an ApiType -> AugmentedConst<ApiType>. ApiType is a union of 'promise' | 'rxjs'. The way I interperate it is its a wrapper type that denotes what type of ApiType is involved with the const. In this case transactionByteFee. That being said this same wrapper exists for query -> AugmentedQuery, rpc, and so on.