[#2309] Add JDK 26-ea to the build #4694

Job	Run time
Run examples in 'session-example' on MySQL	2m 6s
Test with MariaDB	4m 2s
Test with MySQL	4m 19s
Test with PostgreSQL	3m 31s
Test with MSSQLServer	3m 52s
Test with Db2	5m 34s
Test with CockroachDB	6m 22s
Run examples in 'native-sql-example' on PostgreSQL	1m 55s
Test with Oracle	5m 21s
Run examples in 'session-example' on PostgreSQL	1m 58s
Test with Java 25-ea	3m 21s
Test with Java 21	3m 14s
Test with Java 11	3m 34s
Test with Java 20	3m 16s
Test with Java 17	3m 23s
Test with Java 26-ea	3m 25s
Test with Java 24	3m 19s
	1h 2m 32s

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