Release v1.21.0-rc.1

Changelog

Full Changelog

Features

• include EL client info in graffiti (#6753) (@ensi321)
• add historical state regen (#6033) (@wemeetagain)
• use napi-rs blst bindings (#6894) (@wemeetagain)
• add yamux stream muxer (#5886) (@wemeetagain)
• add cli flag to disable light client server (#6913) (@nazarhussain)
• add option to disable thread pool for keystore decryption (#6949) (@nflaig)

Bug Fixes

• revert yamux (#6990) (@tuyennhv)
• sanitize url in http client debug logs and metrics (#6974) (@nflaig)
• start clock last when initializing validator client (#6973) (@nflaig)
• return finalized as false if finalized epoch is genesis epoch (#6965) (@nflaig)
• ignore noisy eventstream errors due to DNS resolution errors (#6972) (@nflaig)
• fix the publish blinded block api parsing for optional header verison (#6966) (@g11tech)
• sepolia genesis delay (#6961) (@domiwei)
• update user-agent check for go-eth2-client (#6958) (@nflaig)
• expose metadata headers to scripts running in the browser (#6952) (@nflaig)
• add workaround to fix compatibility with go-eth2-client (#6953) (@nflaig)
• default to json if client accepts all media types (#6950) (@nflaig)

Maintenance

• add additional instructions for hotfixes in release.md (#6971) (@philknows)
• bump blst-ts version (#6980) (@matthewkeil)
• refactor block and state api utils (#6963) (@wemeetagain)
• pin nodejs version to 22.4 (#6964) (@nflaig)
• bump @chainsafe/bls-keystore (#6956) (@wemeetagain)
• remove unused metricsRegistries (#6957) (@wemeetagain)
• merge v1.20.1 stable back to unstable (#6960) (@philknows)
• decompose AttesterStatus (#6945) (@wemeetagain)
• merge v1.20.0 stable back to unstable (#6944) (@philknows)
• optimize getSlotFromOffset (#6941) (@wemeetagain)

Documentation

• update dependency graph (#6981) (@philknows)
• update prover and light client documentation (#6983) (@nflaig)
• add note to local testnet setup (#6984) (@nflaig)
• fix formatting of RELEASE.md file (#6985) (@nflaig)
• updated Light Client url in Readme (#6948) (@guha-rahul)
• fix search, redirects and broken links (#6940) (@nflaig)