libs: update jglobus library

updated library contains fix which changes a way how
CA and it's signing_policy file are processed.

Changelog for v2.0.6-rc3.d..v2.0.6-rc4.d
    * [b3dd9f1] Make input streams buffered and close them after use
    * [c3bfef4] issue102: fix - index caches against domain name rather than hash of encodings

GGUS: https://ggus.eu/ws/ticket_info.php?ticket=98570
Acked-by: Albert Rossi
Acked-by: Gerd Behrmann
Acked-by: Paul Millar
Target: master, 2.6, 2.7
Require-book: no
Require-notes: yes
(cherry picked from commit 01f06295dfa37fd648c3df4366401b9feafb0b61)
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Merge pull request #269 from kofemann/jglobus-fix-2.6

libs: update jglobus library