v9.4.1

Contributed:

• Update @substrate/connect to latest (Thanks to https://github.com/wirednkod)

Changes:

• Cater for v1.5 Weight JSON representation (via RPC)
• Polkadot 9270, Kusama 9280 & Westend 9290 upgrade blocks
• Update to latest Substrate, Polkadot & Kusama metadata