update statistics image to v2.4 and bump config version to v2.4

The updated statistics image now pulls data from the database once per day, but
attempts to upload hourly to prevent large delays due to poor network
connectivity.

config.json

@@ -1,7 +1,7 @@
 {
   "name": "streamline-emr",
   "org": "streamline",
-  "version": "2.3",
+  "version": "2.4",
   "platforms": [
     "linux/arm64"
   ]

src/docker-compose.yml

@@ -18,7 +18,7 @@ services:
       retries: 5
 
   statistics:
-    image: registry.gitlab.com/signalytic/client-external/streamline/streamline-emr/statistics/arm64:2.3
+    image: registry.gitlab.com/signalytic/client-external/streamline/streamline-emr/statistics/arm64:2.4
     container_name: streamline-emr-statistics
     restart: unless-stopped
     environment:
@@ -46,4 +46,4 @@ services:
       test: ["CMD", "redis-cli", "ping"]
       interval: 30s
       timeout: 10s
-      retries: 3
+      retries: 3