Fix https://twitter.com/YWRlbF82NF9l/status/1663904169307127808

hasumikin · hasumikin · commit 2acc708be660 · 2023-06-04T13:27:56.000+09:00
diff --git a/Rakefile b/Rakefile
@@ -54,8 +54,7 @@ end
 
 task :libmruby => "lib/picoruby" do
   FileUtils.cd "lib/picoruby" do
-    sh "rake test"
-    sh "rake"
+    sh "MRUBY_CONFIG=default rake test"
   end
 end
 
diff --git a/lib/picoruby b/lib/picoruby
@@ -1 +1 @@
-Subproject commit 571b0ab13e78728d12d2bf52154da356d9085975
+Subproject commit ee89d61aaaf151c6af1cea1384106603da01d72c
