Add missing import(?)

Author: niloc132

extensions/parquet/table/src/test/java/io/deephaven/parquet/table/TestParquetTools.java

@@ -58,6 +58,7 @@
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.function.Function;
 import java.util.stream.IntStream;
 import java.util.stream.LongStream;