Update to HarfBuzz 2.7.2 (#1175)
Update to HarfBuzz 2.7.2 (#1175)

(https://github.com/harfbuzz/harfbuzz/releases/tag/2.7.2)
NiLuJe/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,koreader/koreader-base,Frenzie/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,Frenzie/koreader-base,koreader/koreader-base