Update slack invitation link

unasuke · unasuke · commit 392d378a491e · 2023-08-19T14:05:58.000+09:00
limit exceeded maybe
diff --git a/_config.yml b/_config.yml
@@ -20,4 +20,4 @@ twitter:
   card: summary_large_image
   username: ruby-jp
 
-slack_invite_link: https://join.slack.com/t/ruby-jp/shared_invite/zt-1x6ih6re9-rb_RdylYdnqrVplw278n4Q
+slack_invite_link: https://join.slack.com/t/ruby-jp/shared_invite/zt-21eork7cn-GK5P~~OlmyzC2r~Lpg5ryg
