feat: add dod joao pessoa organizers

Author: thiagooliveira-sh

assets/events/2025-joao-pessoa/logo-square.png

@@ -4,6 +4,7 @@ city: "João Pessoa" # The displayed city name of the event. Capitalize it.
 event_twitter: "dodjoaopessoa" # Change this to the twitter handle for your event such as devopsdayschi or devopsdaysmsp
 description: "Devopsdays esta chegando em João Pessoa!" # Edit this to suit your preferences
 ga_tracking_id: "" # If you have your own Google Analytics tracking ID, enter it here. Example: "UA-74738648-1"
+event_logo: "logo-square.png"
 
 # All dates are in unquoted 2025-MM-DDTHH:MM:SS+TZ:TZ, like this:
 #   variable: 2019-01-04T00:00:00+02:00