Returns configRaw with identityVerification (and, when given, maxSessionDeadlineIso) replaced, preserving every other key verbatim.
configRaw
identityVerification
maxSessionDeadlineIso
the stored Config
the new verification state
Optional
a new absolute deadline to write, or undefined to leave the existing one alone
Returns
configRawwithidentityVerification(and, when given,maxSessionDeadlineIso) replaced, preserving every other key verbatim.