New bugfix release 2.45.1

New bugfixes:

• data/selinux: allow checking /var/cache/app-info
• cmd/snap-confine: add support for libc6-lse
• interfaces: miscellanious policy updates xlv
• snap-bootstrap: remove sealed key file on reinstall
• interfaces-ssh-keys: Support reading /etc/ssh/ssh_config.d/
• gadget: make ext4 filesystems with or without metadata checksum
• interfaces/fwupd: allow bind mount to /boot on core
• tests: cherry-pick test fixes from master
• snap/squashfs: also symlink snap Install with uc20 seed snap dir
  layout
• interfaces/serial-port: add NXP SC16IS7xx (ttySCX) to allowed
  devices
• snap,many: mv Open to snapfile pkg to support add'l options to
  Container methods
• interfaces/builtin/desktop: do not mount fonts cache on distros
  with quirks
• devicestate, sysconfig: revert support for cloud.cfg.d/ in the
  gadget
• data/completion, packaging: cherry-pick zsh completion
• state: log task errors in the journal too
• devicestate: do not report "ErrNoState" for seeded up
• interfaces/desktop: silence more /var/lib/snapd/desktop/icons
  denials
• packaging/fedora: disable FIPS compliant crypto for static
  binaries
• packaging: stop depending on python-docutils