macOS

Add docs for troubleshooting the libxml2 mismatch issue #881

Job	Run time
cache_libs / cache_libs (windows-2022)	27s
cache_libs / cache_libs (windows-11-arm)	39s
cache_libs / cache_libs (ubuntu-22.04-arm)	24s
cache_libs / cache_libs (ubuntu-22.04)	8s
cache_libs / cache_libs (macos-latest)	10s
macosx (3.12, static)	4m 6s
macosx (3.10, static)	5m 2s
macosx (3.9)	2m 14s
macosx (3.11)	2m 12s
macosx (3.11, static)	5m 1s
macosx (3.12)	2m 19s
macosx (3.14, static)	6m 8s
macosx (3.13)	2m 13s
macosx (3.10)	1m 51s
macosx (3.13, static)	6m 15s
macosx (3.14)	1m 28s
macosx (3.9, static)	6m 48s
	47m 25s

Provide feedback