* First take at updating everything to v5
* Patch gRPC gateway to use prysm v5
Fix patch
* Update go ssz
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Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>
* With attribute, use justified hash as safe block hash
* Use UnrealizedJustifiedPayloadBlockHash
* Cleanups
* Add test to forkchoice
* Block proposal
* Fix mock
* Fix test
* Fix rest of the tests
* Potuz feedback
* Fix test
* Use unrealized justified hash for regular fcu