Update ghcr.io/element-hq/synapse Docker tag to v1.154.0

Author: renovate[bot]

docker-compose.yml

@@ -32,7 +32,7 @@ services:
         condition: service_completed_successfully
 
   synapse:
-    image: ghcr.io/element-hq/synapse:v1.152.0
+    image: ghcr.io/element-hq/synapse:v1.154.0
     container_name: matrix-synapse
     entrypoint: ["/bin/sh", "-c", "chown -R 991:991 /data && exec /start.py"]
     depends_on: