cryptoswap stuck to /dev/sdb2 by name after installation

[Michał Sawicz]

After I've installed 22.04 recently with encrypted ZFS, I realized cryptoswap was bound to `/dev/sdb2` by name in `/etc/crypttab`, rather than through a label or UUID.

That meant a big boot delay as well as no swap after removing the install media.

Changing it to a `/dev/disk/by-uuid` path fixed it all.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.15.0-33.34-generic 5.15.30
Uname: Linux 5.15.0-33-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl icp
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu May 26 16:29:53 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2022-04-29 (27 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/zsh
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)