Fixup du tests

Author: jeromekelleher

tests/test_core.py

@@ -237,7 +237,7 @@ def test_examples(self, chunk_size, size, start, stop):
         # It works in CI on Linux, but it'll probably break at some point.
         # It's also necessary to update these numbers each time a new data
         # file gets added
-        ("tests/data", 5045032),
+        ("tests/data", 5057263),
         ("tests/data/vcf", 5018640),
         ("tests/data/vcf/sample.vcf.gz", 1089),
     ],