OPENSUSE-SU-2021:0812-1 Security update for libxls

This update for libxls fixes the following issues: libxsl was updated to release 1.6.2: Fix NULL pointer dereferences in the xls2csv tool boo1179532 CVE-2020-27819 Update to release 1.6.1 Enabled decoding of non-Unicode character sets in older BIFF5 XLS files. Improved string conversion performan...