ci: Do not linkcheck web.archive.org URLs

Avoid unnecessary use of Internet Archive resources.
Their URLs are meant to be stable.

Utilities/Sphinx/conf.py.in

@@ -91,6 +91,7 @@ html_favicon = '@conf_path@/static/cmake-favicon.ico'
 linkcheck_ignore = [
     r'about:',
     r'https://gitlab\.kitware\.com/cmake/community/-/wikis/doc/cpack',
+    r'https://web\.archive\.org/',
     r'https://www\.intel\.com/',
     r'https://www\.tasking\.com($|/)',
 ]