... and it turns out that, indeed, Ubuntu version was the one to upgrade in order to install the latest drivers via apt and have everything running smooth without the need to do my rebuild hack.
Of course, my release upgrade totally failed with the "Oh No" message and I lost my installation of kstars and indi.
Just has to re-apply standard procedure:
I could retrieve all my settings and everything works as expecting now
Ps: As a check of the symptoms, now, the "standard" indi_gphoto_ccd has been linked with libraw20:
(base) deneb-l@astroserv:~$ ldd /usr/bin/indi_gphoto_ccd | grep libraw
libraw.so.20 => /lib/x86_64-linux-gnu/libraw.so.20 (0x00007fc986dc3000)