libyang: Update to version 2.0.194

libyang: Update to version 2.0.194

- Update from version 2.0.7 to 2.0.194
- Update of rootfile
- Changelog
   Version 2.0.194 Latest
	    major yanglint improvements
	    minor XPath fixes
	    nested extension handling fixes
	    other minor bugfixes
	    RPM scripts updated
   Version 2.0.164
	    Windows support (thanks to @jktjkt)
	    Schema Mount support
	    schema compilation fixes
	    minor schema printer fixes
	    user-ordered list diff bugfix
	    JSON anyxml/anydata format fixed
	    XML parser CDATA support
	    module caching improvements
	    doc improvements
	    many other various bugfixes
   Version 2.0.112
	    support for XPath variables
	    minor doxygen improvements
	    LYB format bugfixes
	    many other bugfixes
   Version 2.0.97
	    LYB format data length limit of 64kB lifted
	    YANG error-app-tag and error-message improved support
	    XPath * evaluation fix
	    other minor XPath fixes
   Version 2.0.88
	    changed compilation to pedantic and use C11 standard
	    major JSON parser fixes
	    LYB format updated and performance improved
	    LYB big-endian fixes
	    opaque node fixes
	    major identity handling fixes
	    schema compilation refactorization and fixes
	    data validation fixes
	    NETCONF RPC filter attribute support
	    many other minor fixes

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>