fix test_mupdf_regressions version check for bug 707727

Bug 707727 is fixed in mupdf's master branch, not in the release branch
and in particular not in 1.24.1. So adjust the check, assuming that the
fix will be backported to 1.24.2

tests/test_mupdf_regressions.py

@@ -50,7 +50,7 @@ def test_707727():
     page = doc.reload_page(page)  # required to prevent re-use
     pix1 = page.get_pixmap()
     ok = pix0.samples == pix1.samples
-    if fitz.mupdf_version_tuple >= (1, 24, 1):
+    if fitz.mupdf_version_tuple > (1, 24, 1):
         assert ok
     else:
         assert not ok