Add Rocky Mountain Ruby 2025 dates (#1054)

Author: marcoroth

_data/conferences.yml

@@ -2773,7 +2773,7 @@
   location: Boulder, CO
   start_date: 2024-10-07
   end_date: 2024-10-08
-  url: https://rockymtnruby.dev/
+  url: https://2024.rockymtnruby.dev
   twitter: rmrubyconf
   mastodon: https://ruby.social/@rockymntruby
   cfp_open_date: 2024-05-15
@@ -3091,6 +3091,16 @@
   mastodon: https://ruby.social/@kaigionrails
   announced_on: 2024-10-26
 
+- name: Rocky Mountain Ruby 2025
+  location: Boulder, CO
+  start_date: 2025-10-06
+  end_date: 2025-10-07
+  date_precision: year
+  url: https://rockymtnruby.dev
+  twitter: rmrubyconf
+  mastodon: https://ruby.social/@rockymtnruby
+  announced_on: 2024-10-08
+
 - name: RubyWorld Conference 2025
   location: Matsue, Japan
   start_date: 2025-11-06
@@ -3110,17 +3120,6 @@
   mastodon: https://ruby.social/@helsinkiruby
   announced_on: 2025-04-25
 
-- name: Rocky Mountain Ruby 2025
-  location: Boulder, CO
-  # TODO: update when dates are confirmed
-  start_date: 2025-12-31
-  end_date: 2025-12-31
-  date_precision: year
-  url: https://rockymtnruby.dev
-  twitter: rmrubyconf
-  mastodon: https://ruby.social/@rockymtnruby
-  announced_on: 2024-10-08
-
 - name: RubyConf TH 2026
   location: Bangkok, Thailand
   start_date: 2026-01-31