update release team for 26.05 (#1969)

Author: jopejoe1

core/src/content/teams/060_nixos-release.mdx

@@ -2,12 +2,12 @@
 name: NixOS Release Team
 description: Manages the twice-yearly releases of NixOS. It is responsible the entire release process from setting the roadmap to uploading the artifacts.
 members:
+  - name: yaya
+    discourse: yayayayaka
+    title:
   - name: jopejoe1
     discourse: jopejoe1
     title:
-  - name: Leona Maroni
-    discourse: leona
-    title:
 contact:
   - name: Discourse
     href: https://discourse.nixos.org/c/dev/nixos-release-team/32