fix(telemetry): publish the Loki port on the host loopback

Grafana reaches Loki as loki:3100 over the compose network and the collector
exports to it in-network, so the published port was reachable off-host for no
consumer.

docker/telemetry/docker-compose.yml

@@ -134,7 +134,7 @@ services:
   loki:
     image: grafana/loki:3.4.2
     ports:
-      - "3100:3100"
+      - "127.0.0.1:3100:3100"
     command: -config.file=/etc/loki/local-config.yaml
     volumes:
       - loki-data:/loki