bump jekyll version to match github pages version

alee · fmichonneau · commit 524847ac58fb · 2019-06-18T10:49:04.000+02:00
https://pages.github.com/versions/
diff --git a/Makefile b/Makefile
@@ -4,7 +4,7 @@
 # Settings
 MAKEFILES=Makefile $(wildcard *.mk)
 JEKYLL=jekyll
-JEKYLL_VERSION=3.7.3
+JEKYLL_VERSION=3.8.5
 PARSER=bin/markdown_ast.rb
 DST=_site
 
