Functional test stbbr fixture used the old Profanity caps verification
hash (hAkb1xZdJV9BQpgGNw8zG5Xsals=) for buddy1's simulated presence
and the corresponding disco#info reply. The current build computes
JNkIRQChhYM8+Co3IypmMtMJnOE= for the same identity+features set, so
align the fixture with what the running client now produces.