[FLINK-36303] Fix the CI failure after PostgreSQL timestamp precision 0 is supported (#172)

Author: kgeis

flink-connector-jdbc-cratedb/src/test/java/org/apache/flink/connector/jdbc/cratedb/database/dialect/CrateDBDialectTest.java

@@ -51,7 +51,7 @@ protected List<TestItem> testData() {
                 createTestItem("BINARY", "The CrateDB dialect doesn't support type: BINARY(1)."),
                 createTestItem(
                         "TIMESTAMP(9) WITHOUT TIME ZONE",
-                        "The precision of field 'f0' is out of the TIMESTAMP precision range [1, 6] supported by CrateDB dialect."),
+                        "The precision of field 'f0' is out of the TIMESTAMP precision range [0, 6] supported by CrateDB dialect."),
                 createTestItem("TIMESTAMP_LTZ(3)", "Unsupported type:TIMESTAMP_LTZ(3)"));
     }
 }

flink-connector-jdbc-postgres/src/test/java/org/apache/flink/connector/jdbc/postgres/database/dialect/PostgresDialectTest.java

@@ -59,7 +59,7 @@ protected List<TestItem> testData() {
                         "The PostgreSQL dialect doesn't support type: VARBINARY(10)."),
                 createTestItem(
                         "TIMESTAMP(9) WITHOUT TIME ZONE",
-                        "The precision of field 'f0' is out of the TIMESTAMP precision range [1, 6] supported by PostgreSQL dialect."),
+                        "The precision of field 'f0' is out of the TIMESTAMP precision range [0, 6] supported by PostgreSQL dialect."),
                 createTestItem("TIMESTAMP_LTZ(3)", "Unsupported type:TIMESTAMP_LTZ(3)"));
     }