Please see if Package: libayatana-appindicator1 lets you install.
Ayatana Indicators intends to replace that older library, I believe.
Release: 2.0.6.105 (canary) 2023-04-09
Allow install on Debian bookworm by using libayatana-appindicator1, thanks @gpatel-fr
allow install on Debian bookworm using libayatana-appindicator1 shim #4902
which gives some caveats on application indicators on this version of Debian,
however that shouldn’t bother you if your goal is to not use the feature at all…
worries me, but you can see from issue #4902 that its fixer believes it will work.
Results may vary though, so …
If you can install the Canary, that would be even better, but a Canary can be an
unknown quantity initially. This one seems to work OK unless you have macOS.
Downgrading to current Beta is difficult, but next Beta is hoped to emerge soon.