@walletconnect/iso-crypto add @walletconnect/encoding dependency

[nissoh]

fixing a closed issue which didn't seem to resolve #844

@walletconnect/iso-crypto is importing @walletconnect/encoding here https://github.com/WalletConnect/walletconnect-monorepo/blob/8668dcc5ac9a6ec7b446eb2bc51d477b7545303c/packages/helpers/iso-crypto/src/index.ts

commit fixes pnp error @walletconnect/iso-crypto tried to access @walletconnect/encoding,

[nissoh]

ah, forgot to include a lockfile update. sorry this has been done through github /=

[bkrem]

Resolved via #1099, closing. Thanks again for also tackling this! 🙏