move to fortnightly (#408)

discussed with @mbuechse and @depressiveRobot

Signed-off-by: Felix Kronlage-Dammers <[email protected]>

Author: fkr

teams/sig_standard_cert/team_meetings.yml

@@ -83,5 +83,5 @@ events:
     location: "https://conf.scs.koeln:8443/SCS-Tech"
     repeat:
       interval:
-        weeks: 1
+        weeks: 2
       until: 2026-12-18