Pre-release intended for Holesky testnet only

Summary

This pre-release is optional and contains performance improvements as well as bug fixes.

Notable features that directly affect users are:

• Operators - 5x Blob Storage Performance Optimization: Parallel batch header deserialization improves storage performance by ~5x. This will further improve signing performance for nodes that often fail to return a signature within the timeout window.

• Operators - Additional e2e latency and storage metrics: Metrics for e2e attestation and chunk deserialization latencies added.

Other changes:

• Log operator state hash on batch validation failure
• Adds bucket level metrics to the rate limiter library
• Reachability check 404 error handling fixed
• Custom quorum support added to traffic generator

Full Changelog: v0.7.2-rc.1...v0.7.2-rc.2