Update grafana/loki Docker tag to v3.5.4

Author: renovate[bot]

.env

@@ -3,7 +3,7 @@
 # > docker compose --env-file .env --env-file .env.override up
 # > just up
 
-LOKI_IMAGE_NAME=grafana/loki:3.5.0
+LOKI_IMAGE_NAME=grafana/loki:3.5.4
 TEMPO_IMAGE_NAME=grafana/tempo:2.7.2
 PROMETHEUS_IMAGE_NAME=prom/prometheus:v3.3.0
 GRAFANA_IMAGE_NAME=grafana/grafana:12.0.2-security-01