configure is regenerated from configure.ac using a custom containerwith appropriate version of tools (quay.io/tiran/cpython_autoconfby Christian Heimes).As a result, configure falls into the same category as files generatedby Argument Clinic, Freeze and Parser/asdl_c.py. Due to size and churnof these artifacts, they are marked in .gitattributes as generated soGitHub Pull Request Diff Viewer collapses them into a shortnotification. This commit does the same for configure.Actually, configure diff is so large that sometimes it crossesa threshold and GitHub collapses it by force with "Large diffs are notrendered by default" or even "xxx additions, yyy deletions not shownbecause the diff is too large. Please use a local Git client to viewthese changes". SeepythonGH-29756 as an extreme example and<https://github.com/python/cpython/commits/main/configure> foran average.