!3 update to libtiff-4.2.0

From: @shirely16
Reviewed-by: @orange-snn
Signed-off-by: @orange-snn

libtiff.spec

@@ -1,5 +1,5 @@
 Name:           libtiff
-Version:        4.1.0
+Version:        4.2.0
 Release:        1
 Summary:        TIFF Library and Utilities
 License:        libtiff
@@ -111,6 +111,12 @@ find html -name 'Makefile*' | xargs rm
 %exclude %{_datadir}/html/man/tiffgt.1.html
 
 %changelog
+* Wed Jan 27 2021 hanhui <hanhui15@huawei.com> - 4.2.0-1
+- Type: enhancement
+- ID:   NA
+- SUG:  NA
+- DESC: update to 4.2.0
+
 * Tue Jan 7 2020 openEuler Buildteam <buildteam@openeuler.org> - 4.1.0-1
 - update to 4.1.0