don’t install pkgx@latest as well as selected v #138

Job	Run time
install-pkgx (macos-latest)	6s
eval-posix-sh	49s
install-pkgx (ubuntu-latest)	30s
eval-bash	17s
eval-zsh	28s
linuxen (debian:buster-slim)	17s
multiple-apply-is-ok	15s
linuxen (debian:bullseye-slim)	13s
sudo-not-required	23s
linuxen (debian:bookworm-slim)	30s
no-dirs (/usr/local)	16s
linuxen (archlinux:latest)	38s
no-dirs (/usr/local/bin)	13s
linuxen (ubuntu:focal)	16s
linuxen (ubuntu:jammy)	15s
sudo-required	18s
linuxen (ubuntu:24.04)	21s
upgrades	1m 5s
usage-as-proxy	23s
linuxen (ubuntu:24.10)	15s
linuxen (fedora:latest)	29s
	8m 17s

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