Update Gerbera to 1.9.1
Update maintainer entry
Partially backport upstream commit to fix compilation when libinotify is used
Changelog: https://github.com/gerbera/gerbera/releases/tag/v1.9.1
Reference:
https://github.com/gerbera/gerbera/commit/3a29599b8ca82c0cf59392fc1495d32c88580a18