[Chapel Merge] Off-cycle portability updates May 2026

Branch: refs/heads/main
Revision: d29082079a54db4547bedc90432ce2123bb8ffd2
Author: arifthpe
Link: Off-cycle portability updates May 2026 by arifthpe · Pull Request #28826 · chapel-lang/chapel · GitHub
Log Message:
Off-cycle portability updates May 2026 (#28826)

Update portability testing supported versions, outside of the usual
release cycle.

Motivated by working out issues just discovered with Ubuntu 26.04
LTS

ahead of time, but went ahead and updated everything while here.

I have NOT tested newly-added configs, taking the lazy approach of
letting nightly do it to save time.

Future work:

[reviewed by @jabraham17 , thanks!]

Compare: Comparing ee6cb965a3d13e3b1dc1a5ed27bdd1deb4b541ed...82bf9b2af6b9a106702c9b9db3678a95fb3a5c00 · chapel-lang/chapel · GitHub

Diff:
M doc/rst/usingchapel/prereqs-commands.rst
M util/devel/test/portability/README-distro-timelines.txt
D util/devel/test/portability/apptainer/current/alpine-3.20/image.def
R056 util/devel/test/portability/apptainer/current/alpine-3.20-nollvm/image.def util/devel/test/portability/apptainer/current/fedora-44-nollvm/image.def
A util/devel/test/portability/apptainer/current/fedora-44/image.def
A util/devel/test/portability/apptainer/current/ubuntu-resolute-nollvm/image.def
A util/devel/test/portability/apptainer/current/ubuntu-resolute/image.def
M util/devel/test/portability/apptainer/extract-docs.py
https://github.com/chapel-lang/chapel/pull/28826.diff