v2.4.1

IMPROVEMENTS

• switch to go-1.21
• add clickhouse-server:23.8 for integration and testflows tests
• add FTP_SKIP_TLS_VERIFY config option fix 742

BUG FIXES

• fix calculation part size for S3 and buffer size for Azure to avoid errors for upload big files, fix 739 thanks @rodrigargar
• fix GetFileReader for SSE encryption in S3, again fix 709