Add meetup info AustinRB/Austin on Rails for the month of May (ruby-conferences#609)

Co-authored-by: Marco Roth <marco.roth@intergga.ch>

Author: nhessler

_data/meetups.yml

@@ -278,6 +278,13 @@
   end_time: 20:30:00 CEST
   url: https://www.meetup.com/geneva-rb/events/299288843
 
+- name: AustinRB/Austin on Rails - Debugging with ruby/debug
+  location: Austin, TX
+  date: 2024-05-14
+  start_time: 18:30:00 CDT
+  end_time: 20:30:00 CDT
+  url: https://www.meetup.com/austinrb/events/297610740
+
 - name: NYC.rb - Mob Programming - Turbo!
   location: Online
   date: 2024-05-15
@@ -306,6 +313,13 @@
   end_time: 20:30:00 EDT
   url: https://lu.ma/cbeeanbk
 
+- name: AustinRB/Austin on Rails - Ruby Social (Morning)
+  location: Austin, TX
+  date: 2024-05-30
+  start_time: 08:00:00 CDT
+  end_time: 10:00:00 CDT
+  url: https://www.meetup.com/austinrb/events/300256914
+
 - name: Paris.rb
   location: Paris, France
   date: 2024-06-04