rasdaemon: bump to version 0.9.91

Main new features:

  * Replaced Autotools with Meson;
  * Added MySQL/MariaDB and PostgreSQL database support;
  * Replaced ras-mc-ctl with an improved version, in Python;
  * Features are now mapped as modules that are auto-registered
    in runtime;
  * ARM processor error vendor data can now accept multiple
    vendor decoders;
  * Added unit tests for both rasdaemon and ras-mc-ctl;
  * Improved docs with kernel-doc API description;
  * Fixed multiple issues at the code.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>