[FLINK-39748][postgres] Fix snapshot timestamp drift for historical TIMESTAMP/DATE columns #2501

Job	Run time
License Check	4m 45s
Pipeline Connectors Unit Tests 2.x / test (11, 2.2.0, doris, elasticsearch, fluss, iceberg, kafka, maxcompute, mysql-pipeline, oceanba...	1h 4m 45s
Common Unit Tests / test (11, generic, core)	12m 58s
Common Unit Tests 2.x / test (11, 2.2.0, core)	13m 24s
Source Unit Tests / test (11, generic, mysql-source)	46m 47s
Pipeline Unit Tests / test (11, generic, doris, elasticsearch, fluss, hudi, iceberg, kafka, maxcompute, mysql-pipeline,...	1h 2m 7s
Source Unit Tests 2.x / test (11, 2.2.0, mysql-source)	41m 17s
Source E2E Tests / test (11, 1.20.3, source_e2e)	28m 20s
Source Unit Tests / test (11, generic, oracle, sqlserver)	47m 25s
Source Unit Tests 2.x / test (11, 2.2.0, db2, mongodb)	34m 31s
Source Unit Tests / test (11, generic, postgres-source, oceanbase-source, tidb, vitess)	59m 39s
Source Unit Tests / test (11, generic, db2, mongodb)	43m 54s
Source Unit Tests 2.x / test (11, 2.2.0, oracle, sqlserver)	40m 8s
Pipeline E2E Tests 2.x (1-Parallelism) / test (11, 2.2.0, pipeline_e2e)	1h 2m 6s
Pipeline E2E Tests (1-Parallelism) / test (11, 1.20.3, pipeline_e2e)	1h 23m 33s
Pipeline E2E Tests 2.x (4-Parallelism) / test (11, 2.2.0, pipeline_e2e)	1h 3m 59s
Source Unit Tests 2.x / test (11, 2.2.0, postgres-source, oceanbase-source, tidb, vitess)	45m 54s
Pipeline E2E Tests (4-Parallelism) / test (11, 1.20.3, pipeline_e2e)	1h 26m 43s
	14h 2m 15s

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