This commit updates the BENCHMARK_REPORT.md to reflect the latest performance improvements following the implementation of optimized windowed multiplication for ECDH and verification. Key changes include a new generation date, updated operation times, and a detailed analysis of the performance of P256K1Signer, BtcecSigner, and NextP256K across various operations. Notably, P256K1Signer now shows significant improvements in ECDH (33% faster) and verification (20% faster), establishing it as the fastest pure Go implementation across all operations.