Change PST to CEST in availability table (#27)

Updated availability table to reflect CEST instead of PST and add my availability

Author: schenney-chromium

planning/berlin-2026/index.md

@@ -61,9 +61,10 @@ Flag issues with [Agenda+ F2F](https://github.com/w3c/csswg-drafts/issues?q=is%3
 
 Please list your availability in Berlin time (morning/afternoon/all or specific time ranges). See [Time Converter](https://www.worldtimebuddy.com/?qm=1&lid=5391959,2158177,1850147,293397,2988507,2643743,5128581&h=5391959&date=2025-1-29&sln=8-16&hf=1)
 
-| Name | Timezone | PST Availability | Other Notes |
+| Name | Timezone | CEST Availability | Other Notes |
 | --- | --- | --- | --- |
 | Noam Rosenthal | BST | All | |
+| Stephen Chenney | EDT | 14:00-19:00 | |
 
 ### Regrets