Bump base (#5532)
Bump base (#5532)

Pickup https://github.com/koreader/koreader-base/pull/997 & https://github.com/koreader/koreader-base/pull/998

The most user-visible fix being startup in non-standard orientations on
the Libra no longer being broken ;).
koreader/koreader,Hzj-jie/koreader,poire-z/koreader,Frenzie/koreader,mwoz123/koreader,Frenzie/koreader,koreader/koreader,mihailim/koreader,NiLuJe/koreader,Markismus/koreader,pazos/koreader,NiLuJe/koreader,poire-z/koreader