update nearcore version to 2.3.0

[kobayurii]

Supported Nearcore Version

• nearcore v2.3.0
• rust v1.81.0

What's Changed

• Change logic to get shard_layout for indexers. Main idea to avoid request protocol_config via RPC, protocol_config could be changed with new nearcore release and we should support old and new versions of protocol_config.
• After update rust to version 1.81.0 we got a lot of warnings: this function depends on never type fallback being '()'. For now, it is a warning but for the future version, it will be necessary to specify the types explicitly. For more information, see issue #123748 Tracking Issue for Rust 2024: Make ! fall back to ! rust-lang/rust#123748

[kobayurii]

@race-of-sloths please, include my PR in the Race

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[khorolets]

I see a lot of changes related to the shardlayout, protocol config, redis client calls, future joins and other places. Please, reflect the important ones in changelog and extend the PR description, because right now the number of changes doesn't correspond a simple "upgrade nearcore". Thank you!

[khorolets]

nice one

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