Bump actions/checkout from 5 to 6 in the github-actions group #1571

Job	Run time
Clickhouse tests / Run Clickhouse tests	5m 17s
Oracle tests / Run Oracle tests	4m 35s
S3 tests / Run S3 tests	7m 42s
MySQL tests / Run MySQL tests	3m 49s
Iceberg tests / Run Iceberg tests	5m 2s
Hive tests / Run Hive tests	4m 13s
Samba tests / Run Samba tests	4m 11s
SFTP tests / Run SFTP tests	4m 21s
MSSQL tests / Run MSSQL tests	4m 16s
FTP tests / Run FTP tests	7m 21s
HDFS tests / Run HDFS tests	8m 3s
FTPS tests / Run FTPS tests	3m 58s
Scheduler tests / Run Scheduler tests	1m 17s
WebDAV tests / Run WebDAV tests	3m 58s
Unit tests / Run unit tests	2m 56s
Tests done	0s
	1h 10m 59s

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