I upgraded my Nexus 5 from 3.2.1.20 to 3.3.0.14 yesteday.
The camera is working.

The upgrading process is as folllows,
ssu release
The release is 3.2.1.20.
ssu lr
The rpepo adaptation-community-hammerhead is
http://repo.merproject.org/obs/home:...2.1.20_latest/ on 22 Mar 2020.
ssu dr adaptation-community-common-hammerhead
ssu ar adaptation-community-common-hammerhead http://repo.merproject.org/obs/nemo:...atest_armv7hl/
ssu release 3.3.0.14
version --dup
reboot