After the update, the container will increase by 200 MB

I installed Collabora about half a year ago in the LXC Linux container (debian 11). The entire container was 900 MB in size. After the next update, the size of the LXC is 1.17GB.
After the next update, the size of the LXC is 1.41GB
Today I updated for the last time and the size is 1.66GB
I update via apt.
What can cause the enlargement of LXC?
Could it be the logs?
Or a remnant of the old version of Collabora?
My current version

COOLWSD

22.05.12.4 (git hash: bcbca64)
I’m doing lxc backups and the size worries me