This update for libsass to version 3.6.1 fixes the following issues:

Security issues fixed:

- CVE-2019-6283: Fixed heap-buffer-overflow in Sass::Prelexer::parenthese_scope(char const*) (boo#1121943).
- CVE-2019-6284: Fixed heap-based buffer over-read exists in Sass:Prelexer:alternatives (boo#1121944).
- CVE-2019-6286: Fixed heap-based buffer over-read exists in Sass:Prelexer:skip_over_scopes (boo#1121945).
- CVE-2018-11499: Fixed use-after-free vulnerability in sass_context.cpp:handle_error (boo#1096894).
- CVE-2018-19797: Disallowed parent selector in selector_fns arguments (boo#1118301).
- CVE-2018-19827: Fixed use-after-free vulnerability exists in the SharedPtr class (boo#1118346).
- CVE-2018-19837: Fixed stack overflow in Eval::operator() (boo#1118348).
- CVE-2018-19838: Fixed stack-overflow at IMPLEMENT_AST_OPERATORS expansion (boo#1118349).
- CVE-2018-19839: Fixed buffer-overflow (OOB read) against some invalid input (boo#1118351).
- CVE-2018-20190: Fixed Null pointer dereference in Sass::Eval::operator()(Sass::Supports_Operator*) (boo#1119789).
- CVE-2018-20821: Fixed uncontrolled recursion in Sass:Parser:parse_css_variable_value (boo#1133200).
- CVE-2018-20822: Fixed stack-overflow at Sass::Inspect::operator() (boo#1133201).

This update was imported from the openSUSE:Leap:15.0:Update update project.