update ruby version to support Heroku 22

nicholaswmin · nicholaswmin · commit 6e3b859bc790 · 2023-06-21T01:55:51.000+03:00
diff --git a/Gemfile.lock b/Gemfile.lock
@@ -154,7 +154,7 @@ DEPENDENCIES
   webrick
 
 RUBY VERSION
-   ruby 2.7.2p137
+   ruby 3.1.3
 
 BUNDLED WITH
    2.2.20
