v26.3.1

Notes The Nimbus consensus client v26.3.1 is a medium-urgency release for Ethereum which improves column-handling performance and increases validator client robustness. It is high-urgency for Gnosis due to the imminent Fulu fork. Improvements Schedule Fulu fork for Gnosis: #8144 Implement the fast confirmation rule: #8072 #8121 #8129 #8130 #8132 #8137 Verify block signatures only once rather than…