sysutils/dsbmd: Update to 1.11

ChangeLog: https://freeshell.de/~mk/projects/dsbmd-relnotes.html

• A bug has been fixed where DSBMD exits with an error when the user tries to mount a smartphone after a previously failed attempt.
• Command functions now run in a thread so that time-limit exceeding commands executing an uninterruptible system call will not block the daemon.

PR: 248915
Submitted by: mk@nic-nac-project.org (maintainer)
MFH: 2020Q3 (runtime fix)