Suggested in https://sagemath.zulipchat.com/#narrow/stream/271086-feedback/topic/hello/near/297088245

Marked "critical" because we set a necessary upper bound for the version of igraph in spkg-configure.m4

CC: @dcoudert @dimpase

Component: packages: optional

Author: Matthias Koeppe

Branch/Commit: d51e167

Reviewer: David Coudert

Issue created by migration from https://trac.sagemath.org/ticket/34491