Update grafana/loki Docker tag to v3.5.8 (#233)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

loki-logging-spring-tests/docker-compose.yml

@@ -3,7 +3,7 @@ networks:
 
 services:
   loki:
-    image: grafana/loki:3.5.7
+    image: grafana/loki:3.5.8
     ports:
       - "3100:3100"
     command: -config.file=/etc/loki/local-config.yaml