fix env for ci

.env

@@ -85,7 +85,7 @@ MERCURE_URL=xxx
 # The public URL of the Mercure hub, used by the browser to connect
 MERCURE_PUBLIC_URL=xxx
 # The secret key used to sign the JWTs
-MERCURE_PUBLISHER_JWT_KEY=xxx
+MERCURE_JWT_SECRET=xxx
 ###< symfony/mercure-bundle ###
 
 ###> AdminAssos configuration ###