Reduce to one extra session after deliberation

Signed-off-by: Matthias Büchse <matthias.buechse@alasca.cloud>

Author: mbuechse

teams/sig_standard_cert/onetimes.yml

@@ -17,8 +17,8 @@ events:
       Coordinator: Matthias Büchse <matthias.buechse[at]cloudandheat.com>
 
   - summary: "SIG Standardization/Certification: extra session"
-    begin: 2026-06-11 14:05:00
-    uid: sig-std-crt-2026-06-11@docs.scs.community
+    begin: 2026-06-25 14:05:00
+    uid: sig-std-crt-2026-06-25@docs.scs.community
     duration:
       minutes: 50
     description: |
@@ -34,7 +34,3 @@ events:
       Dial-In: +49-221-292772-611
       Coordinator: Matthias Büchse <matthias.buechse[at]alasca.cloud>
     location: "https://conf.scs.koeln:8443/SCS-Tech"
-    repeat:
-      interval:
-        weeks: 2
-      until: 2026-06-25