Switch from flake8 to ruff #1686

Job	Run time
MySQL tests / Run MySQL tests	4m 11s
HDFS tests / Run HDFS tests	2m 50s
Clickhouse tests / Run Clickhouse tests	4m 25s
MSSQL tests / Run MSSQL tests	4m 25s
Hive tests / Run Hive tests	4m 10s
SFTP tests / Run SFTP tests	4m 32s
Oracle tests / Run Oracle tests	4m 31s
Iceberg tests / Run Iceberg tests	4m 29s
S3 tests / Run S3 tests	3m 12s
Samba tests / Run Samba tests	4m 55s
Unit tests / Run unit tests	13m 43s
FTP tests / Run FTP tests	4m 33s
WebDAV tests / Run WebDAV tests	4m 23s
FTPS tests / Run FTPS tests	4m 24s
Scheduler tests / Run Scheduler tests	3m 12s
Tests done	0s
	1h 11m 55s

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