libX11 1.8.6, including fix for CVE-2023-3138

Alan Coopersmith requested to merge alanc/libx11:XE into master

Fixes CVE-2023-3138: X servers could return values from XQueryExtension that would cause Xlib to write entries out-of-bounds of the arrays to store them, though this would only overwrite other parts of the Display struct, not outside the bounds allocated for that structure.

Reported-by: Gregory James DUCK Signed-off-by: Alan Coopersmith

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