don't lock dpkg in update commands

The update command acquires a lock on lists/, but at the end it will
also require the dpkg/lock while building the binary caches. That seems
rather pointless as we are only reading those files, not causing writing
in them. This can also cause problems if a package installation is
running and a background process (like cron) starts an update: If you
are "lucky" enough the update process will pick the dpkg lock in between
apt calls causing the installation process to fail.

(cherry picked from commit 0d9081598afa051409b03dbdbe5025cd7ce59ba4)
(cherry picked from commit b234a610a3818af69952bf85c389588a99b4349f)

0 files changed, 0 insertions, 0 deletions