Merge pull request #1482 from confluentinc/CC-31262-remove-utils-mkSet-usage

Removed usage of kafka utils mkSet

Author: CodeUnravel

src/main/java/io/confluent/connect/jdbc/dialect/PostgreSqlDatabaseDialect.java

@@ -27,7 +27,6 @@
 import io.confluent.connect.jdbc.util.TableDefinition;
 import io.confluent.connect.jdbc.util.TableId;
 import org.apache.kafka.common.config.AbstractConfig;
-import org.apache.kafka.common.utils.Utils;
 import org.apache.kafka.connect.data.Date;
 import org.apache.kafka.connect.data.Decimal;
 import org.apache.kafka.connect.data.Schema;
@@ -47,6 +46,7 @@
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
@@ -83,11 +83,11 @@ public DatabaseDialect create(AbstractConfig config) {
    * Define the PG datatypes that require casting upon insert/update statements.
    */
   private static final Set<String> CAST_TYPES = Collections.unmodifiableSet(
-      Utils.mkSet(
+      new HashSet<>(Arrays.asList(
           JSON_TYPE_NAME,
           JSONB_TYPE_NAME,
           UUID_TYPE_NAME
-      )
+      ))
   );
 
   /**