Upgrade to the latest `index-provider` which upgrades the go-legs
protocol to allow the inclusion of extra gossip data that may be used
for gossip validation purposes. In the case of lotus gossip message
validators the miner ID is used to verify the sender's peer ID on chain.
Relates to:
- https://github.com/filecoin-project/lotus/pull/8045
Rename the config section corresponding to indexing to `IndexProvider`
for better readability.
Update existing docs for better clarity and add docs for config
parameters embedded from `index-provider` `Ingest` config library.
