community/arch-install-scripts: upgrade to 26

v24...v26

ab30883f Bind mount /run read-only
bb04ab43 Fix a typo in common
88c0c9db Don't warn if ownership changes when copying /etc/pacman.d/gnupg
ee9db7d5 Add unshare mode to pacstrap
2623f8d7 Add unshare mode to arch-chroot
6d85a167 Added info to arch-chroot --help
2569d70d Added info to docs and improved readability
516cc711 README: document asciidoc optional dependency
20616bac add_resolve_conf: recursive host + target symlinks
9ffd8bc6 common: include f2fs.fsck
8a561339 common: Make run a tmpfs mount
58ff4287 Use separate pid namespace for worker processes