ci(e2e): adjust ua tests to "unknown"

fix: api keys might be None, handle that correctly

Merge branch 'bugfix'

Merge branch 'bug/printer-xss' into bugfix

fix: pin psutil to 6.0.0

Newer packages on piwheels are broken under bullseye,
causing OctoPrint's startup to fail.

See piwheels/packages#580

Merge branch 'staging/bugfix'

ux: protect against misconfiguration

See OctoPrint#5145

Thanks to @jneilliii for finding this :P and @jacopotediosi for suggesting how best to protect against it.

Merge branch 'staging/maintenance'

chor(errortracking): update DSNs

chore(errortracking): update DSNs