rn-122: add article about the Git Merge 2025

Author: chriscool

rev_news/drafts/edition-122.md

@@ -30,6 +30,16 @@ This edition covers what happened during the months of March 2025 and April 2025
   where everyone is welcome, especially to talk about their encounter
   with Git.
 
+* [[ANNOUNCE] Git Merge 2025, September 29-30, San Francisco, CA](https://lore.kernel.org/git/[email protected]/)
+
+  Taylor Blau announced a new [Git Merge 2025](https://git-merge.com)
+  conference on September 29-30 at GitHub HQ in San Francisco along
+  with a Contributor's Summit on September 30.
+
+  Registration and a Call for Proposals are open. Requests for
+  financial assistance with travel costs can be sent to the Git PLC at
+  <[email protected]>.
+
 <!---
 ### Reviews
 -->