Update grafana/grafana Docker tag to v9.5.6

This MR contains the following updates:

Package	Update	Change
grafana/grafana	minor	9.4.3 -> 9.5.6

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intern/docker_grafana/templates/docker-compose.yml

@@ -4,7 +4,7 @@ services:
 
   app:
 
-    image: grafana/grafana:9.4.3
+    image: grafana/grafana:9.5.6
     restart: always
     volumes:
       - "{{ basedir }}/grafana.ini:/etc/grafana/grafana.ini"