[apache#3250] improve(catalog-jdbc-pg): Added missing @OverRide annot…

…ation (apache#3267)

### What changes were proposed in this pull request?

Added `@Override` annotation on getTableBuilder in
PostgreSqlTableOperations

### Why are the changes needed?

Fix: apache#3250

catalogs/catalog-jdbc-postgresql/src/main/java/com/datastrato/gravitino/catalog/postgresql/operation/PostgreSqlTableOperations.java

@@ -72,6 +72,7 @@ public void initialize(
         "The `jdbc-database` configuration item is mandatory in PostgreSQL.");
   }
 
+  @Override
   protected JdbcTable.Builder getTableBuilder(
       ResultSet tablesResult, String databaseName, String tableName) throws SQLException {
     boolean found = false;