Recommended update for libsolv

This update for libsolv fixes the following issues:

- Fix rare segfault in resolve_jobrules() that could happen if new rules are learnt.
- Fix a couple of memory leaks in error cases.
- Fix error handling in solv_xfopen_fd()
- Fixed 'regex' code on win32.
- Fixed memory leak in choice rule generation

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Fixed bugs
Selected Binaries
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