There could be known issues with one of the package where the appreciated private setup does not comply to the requirements of the newest version of a package. This could e.g. be 'chromium-browser', where suddenply some deprecitaed function will not work anymore, so it's preferred to stick to the currently installed version.
Mark a package to be on-hold, so this will be skipped with e.g. every 'sudo apt upgrade' run by entering e.g.:
sudo apt-mark hold chromium-browser
Undo the blocking (or holding) by simply unhold the package again:
sudo apt-mark unhold chromium-browser