SUSE-SU-2020:1937-1 Security update for cairo

This update for cairo fixes the following issues: - Fix a memory corruption in pango. - Revert 'Correctly decode Adobe CMYK JPEGs in PDF export'. - Add more FreeeType font color conversions to support COLR/CPAL. - Fix crash when rendering Microsoft's Segoe UI Emoji Regular font. - Fix memory leak...