upgrades: Re-enable unattended-upgrade during dist-upgrade

Previously, when dist-upgrading from bullseye to bookworm, there was an issue where unattended-upgrade gets stuck. See #2266 (closed). However, it does not get stuck when dist-upgrading from bookworm to trixie.

Signed-off-by: James Valleroy jvalleroy@mailbox.org

Log of dist-upgrade from bookworm to trixie: freedombox-dist-upgrade.log.gz

Afterwards, I waited for FreedomBox to handle force upgrades, and also clicked the "Manual Update" button.

In the end, there were 2 packages remaining to be upgraded:

• libgd3/testing 2.3.3-9+b1 amd64 [upgradable from: 2.3.3-9]
• minidlna/testing 1.3.3+dfsg-1 amd64 [upgradable from: 1.3.0+dfsg-2.2+deb12u1]

Running apt dist-upgrade would offer to upgrade these, but would need to remove some other packages:

Calculating upgrade...
The following packages were automatically installed and are no longer required:
  libavutil57 libcodec2-1.0 libdav1d6 libmfx1 libvpx7
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
  libavcodec59 libavformat59 libavif15 libsvtav1enc1
The following NEW packages will be installed:
  libass9 libavcodec60 libavfilter9 libavformat60 libavif16 libbs2b0
  libcodec2-1.2 libffmpegthumbnailer4v5 liblilv-0-0 libmysofa1 libplacebo338
  libpocketsphinx3 libpostproc57 librubberband2 libsamplerate0 libserd-0-0
  libsord-0-0 libsphinxbase3 libsratom-0-0 libsvtav1enc1d1 libswscale7
  libunibreak5 libvidstab1.1 libzimg2 libzix-0-0 pocketsphinx-en-us
The following packages will be upgraded:
  libgd3 minidlna
2 upgraded, 26 newly installed, 4 to remove and 0 not upgraded.