v26.5.0

Notes The Nimbus consensus client v26.5.0 is a medium-urgency release which improves performance and execution client compatibility. Improvements Batch-verify KZG columns for increased performance: #8302 Increase KZG recovery and verification performance by 60%: #8405 Increase data column storage performance by 40%: #8336 Avoid unnecessary work on epoch transitions: #8214 Provides standalone light…