switch to dev EW+EC and bump rate limiting

compose.yml

@@ -236,7 +236,7 @@ services:
       - backend
 
   element-web:
-    image: vectorim/element-web:latest
+    image: vectorim/element-web:develop
     restart: unless-stopped
     # ports:
     #   - 8080:80
@@ -254,7 +254,7 @@ services:
         condition: service_completed_successfully
 
   element-call:
-    image: ghcr.io/element-hq/element-call
+    image: ghcr.io/element-hq/element-call:latest-ci
     restart: unless-stopped
     # ports:
     #   - 8082:80

data-template/synapse/homeserver.yaml

@@ -93,6 +93,12 @@ email:
     password_reset: "[%(server_name)s] Password reset"
     email_validation: "[%(server_name)s] Validate your email"
 
+
+# temporarily boost rate-limits to avoid breaking WIP MatrixRTC signalling
+rc_message:
+  per_second: 2
+  burst_count: 15
+
 experimental_features:
   msc3861: # OIDC
     enabled: true