fix(jdbc): compatible with Postgres 14 (#5019)

close #4825

jdbc-postgres/src/main/java/io/kestra/repository/postgres/PostgresFlowTopologyRepository.java

@@ -2,9 +2,13 @@
 
 import io.kestra.core.models.topologies.FlowTopology;
 import io.kestra.jdbc.repository.AbstractJdbcFlowTopologyRepository;
+import io.kestra.jdbc.repository.AbstractJdbcRepository;
 import jakarta.inject.Inject;
 import jakarta.inject.Named;
 import jakarta.inject.Singleton;
+import org.jooq.DMLQuery;
+import org.jooq.DSLContext;
+import org.jooq.Record;
 
 @Singleton
 @PostgresRepositoryEnabled
@@ -13,4 +17,14 @@ public class PostgresFlowTopologyRepository extends AbstractJdbcFlowTopologyRepo
     public PostgresFlowTopologyRepository(@Named("flowtopologies") PostgresRepository<FlowTopology> repository) {
         super(repository);
     }
+
+    @Override
+    protected DMLQuery<Record> buildMergeStatement(DSLContext context, FlowTopology flowTopology) {
+        return context.insertInto(this.jdbcRepository.getTable())
+            .set(AbstractJdbcRepository.field("key"), this.jdbcRepository.key(flowTopology))
+            .set(this.jdbcRepository.persistFields(flowTopology))
+            .onConflict(AbstractJdbcRepository.field("key"))
+            .doUpdate()
+            .set(this.jdbcRepository.persistFields(flowTopology));
+    }
 }