Update Caddyfile and Docker Compose for Neo4j integration

- Modified Caddyfile to configure reverse proxy for Neo4j HTTP and Bolt protocols.
- Updated Docker Compose to expose port 7687 for Neo4j Bolt protocol access.

Caddyfile

@@ -58,7 +58,12 @@
 
 # Neo4j
 {$NEO4J_HOSTNAME} {
-    reverse_proxy neo4j:7474
+    reverse_proxy / neo4j:7474
+}
+
+# Neo4j Bolt Protocol (wss)
+https://{$NEO4J_HOSTNAME}:7687 {
+    reverse_proxy neo4j:7687
 }
 
 # SearXNG

docker-compose.yml

@@ -179,6 +179,7 @@ services:
     ports:
       - "80:80"
       - "443:443"
+      - "7687:7687"
     restart: unless-stopped
     volumes:
       - ./Caddyfile:/etc/caddy/Caddyfile:ro