fix Gemfile: gem 'embulk', '< 0.10'

ck-fm0211 · ck-fm0211 · commit e8220d99dead · 2021-03-07T15:00:38.000+09:00
diff --git a/Gemfile b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org/'
 
 gemspec
-gem 'embulk'
+gem 'embulk', '< 0.10'
 gem 'liquid', '= 4.0.0' # the version included in embulk.jar
 gem 'embulk-parser-none'
 gem 'embulk-parser-jsonl'
