Update the RPC nodes used by the Boson dApp

[levalleux-ludo]

Why

The current paid Infura RPC plan is being replaced with 3 separate free-plan Infura projects (1 per environment), to remove the ongoing paid cost.

Scope

• Create 3 free-plan Infura projects: testing, staging, production
• Update core-components with the new RPC URLs (tracked in bosonprotocol/core-components)
• Consume the new core-sdk version in the dApp
• Redeploy the dApp to testing, staging and production

Related

• Part of SOW-001 "Services Providers Migration" between LX Foundry and Redeemeum
• bosonprotocol/core-components: migrate subgraph provider from Ormi to Goldsky
• bosonprotocol/interface: update the IPFS gateway URLs used by the Boson dApp