docs: Add release notes for v6.0.0a12

DIRACGrid CI · DIRACGrid CI · commit 22fdfb789fda · 2025-05-19T09:20:40.000Z
diff --git a/release.notes b/release.notes
@@ -1,3 +1,6 @@
+[v6.0.0a12]
+
+
 [v6.0.0a11]
 
 

-Original file line number
+Diff line change
@@ @@ -1,3 +1,6 @@ @@
 +[v6.0.0a12]
++
++
 [v6.0.0a11]