Devel::CheckLib bug causes failure to find expat library on Mac OS X 10.4 and earlier

XML::Parser bundles a copy of Devel::CheckLib that is affected by https://github.com/mattn/p5-Devel-CheckLib/issues/40 which makes it unable to find expat on Mac OS X 10.4 and earlier. This was the cause of https://github.com/cpan-authors/XML-Parser/issues/83#issuecomment-2483730840. Once CheckLib is fixed and a new version is released, XML::Parser should update its bundled copy.