chore(deps): update grafana/grafana docker tag to v12.2.1

Author: renovate[bot]

spring-prometheus-grafana-example/compose.yaml

@@ -25,7 +25,7 @@ services:
 
   grafana:
     container_name: grafana
-    image: grafana/grafana:12.2.0
+    image: grafana/grafana:12.2.1
     ports:
       - "3000:3000"
     depends_on: