Reported by Brian Foster in:
<https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/2161155>
* gnulib: Update to get commit b18879b9ed (canonicalize: Fix a missing
check for symlink loops., 2026-09-25)
* tests/misc/realpath.sh: Add a call to getlimits_. Add a test case.
* NEWS: Mention the bug fix.