bpo-28494: install ziptestdata to fix install bot (GH-15902)

(cherry picked from commit c374474)

Co-authored-by: Gregory P. Smith <[email protected]>

Author: miss-islington

Makefile.pre.in

@@ -1372,6 +1372,7 @@ LIBSUBDIRS=	tkinter tkinter/test tkinter/test/test_tkinter \
 		test/test_importlib/source \
 		test/test_importlib/zipdata01 \
 		test/test_importlib/zipdata02 \
+		test/ziptestdata \
 		asyncio \
 		test/test_asyncio \
 		collections concurrent concurrent/futures encodings \