Fixed isCDC method with proper PostgresUtil function and corresponding imports

Author: ryankfu

airbyte-integrations/connectors/source-postgres/src/test/java/io/airbyte/integrations/source/postgres/PostgresSourceTest.java

@@ -8,9 +8,11 @@
 import static io.airbyte.integrations.source.postgres.utils.PostgresUnitTestsUtil.map;
 import static io.airbyte.integrations.source.postgres.utils.PostgresUnitTestsUtil.setEmittedAtToNull;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
@@ -458,12 +460,12 @@ void testReadSuccess() throws Exception {
   void testIsCdc() {
     final JsonNode config = getConfig(PSQL_DB, dbName);
 
-    assertFalse(PostgresSource.isCdc(config));
+    assertFalse(PostgresUtils.isCdc(config));
 
     ((ObjectNode) config).set("replication_method", Jsons.jsonNode(ImmutableMap.of(
         "replication_slot", "slot",
         "publication", "ab_pub")));
-    assertTrue(PostgresSource.isCdc(config));
+    assertTrue(PostgresUtils.isCdc(config));
   }
 
   @Test