Fix Playwright test conf and update deps (#6176)

Author: Timshel

playwright/.env.template

@@ -39,7 +39,7 @@ DUMMY_AUTHORITY=http://${KC_HTTP_HOST}:${KC_HTTP_PORT}/realms/${DUMMY_REALM}
 ######################
 ROCKET_ADDRESS=0.0.0.0
 ROCKET_PORT=8000
-DOMAIN=http://127.0.0.1:${ROCKET_PORT}
+DOMAIN=http://localhost:${ROCKET_PORT}
 LOG_LEVEL=info,oidcwarden::sso=debug
 I_REALLY_WANT_VOLATILE_STORAGE=true