Add private constructor for constant class

Author: tuliren

airbyte-integrations/connectors/destination-databricks/src/main/java/io/airbyte/integrations/destination/databricks/DatabricksConstants.java

@@ -15,4 +15,7 @@ public class DatabricksConstants {
       "delta.autoOptimize.optimizeWrite = true",
       "delta.autoOptimize.autoCompact = true");
 
+  private DatabricksConstants() {
+  }
+
 }