Bump base: crengine update (#2985)

* crengine: return description and keywords metadata
  Only available for EPUB documents for now. @poire-z
* crengine: css related improvements, fix crash, better handling of gif @frankyifei

base

@@ -1 +1 @@
-Subproject commit 4cecbeffc5089972fb7410d952bd8035c1b6007d
+Subproject commit c6c1bd512dfaf22bdf10c9f8a1a74665b27b78e0

spec/unit/readerlink_spec.lua

@@ -18,7 +18,7 @@ describe("ReaderLink module", function()
         }
         readerui.rolling:onGotoPage(4)
         readerui.link:onTap(nil, {pos = {x = 336, y = 668}})
-        assert.is.same(36, readerui.rolling.current_page)
+        assert.is.same(37, readerui.rolling.current_page)
     end)
 
     it("should jump to links in pdf page mode", function()
@@ -55,7 +55,7 @@ describe("ReaderLink module", function()
         }
         readerui.rolling:onGotoPage(4)
         readerui.link:onTap(nil, {pos = {x = 336, y = 668}})
-        assert.is.same(36, readerui.rolling.current_page)
+        assert.is.same(37, readerui.rolling.current_page)
         readerui.link:onGoBackLink()
         assert.is.same(4, readerui.rolling.current_page)
     end)