Update grafana/grafana Docker tag to v9.5.20 (#482)

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

Author: renovate[bot]

deployment/docker/docker-compose.yml

@@ -23,7 +23,7 @@ services:
 
     # Grafana Service
     grafana:
-        image: 'grafana/grafana:9.5.19'
+        image: 'grafana/grafana:9.5.20'
         environment:
             - GF_SECURITY_ADMIN_USER=${ADMIN_USER:-admin}
             - GF_SECURITY_ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}