bump base to bump some dependencies (#4948)
bump base to bump some dependencies (#4948)

https://github.com/koreader/koreader-base/pull/896
* Bump HarfBuzz to 2.4.0
* Bump K2pdfopt to pickup the CJK thingy
* Bump libpng to 1.6.37
* Bump FBInk to 1.15.0

[fix, build] Don't fail quietly on patching failure https://github.com/koreader/koreader-base/pull/895
koreader/koreader,mihailim/koreader,Frenzie/koreader,pazos/koreader,NiLuJe/koreader,poire-z/koreader,poire-z/koreader,mwoz123/koreader,Markismus/koreader,Hzj-jie/koreader,houqp/koreader,NiLuJe/koreader,koreader/koreader,Frenzie/koreader