chore(deps): update grafana/grafana docker tag to v12.4.3

Author: renovate[bot]

.devcontainer/docker-compose.yml

@@ -61,7 +61,7 @@ services:
     restart: always
 
   grafana:
-    image: grafana/grafana:12.4.1@sha256:e932bd6ed0e026595b08483cd0141e5103e1ab7ff8604839ff899b8dc54cabcb
+    image: grafana/grafana:12.4.3@sha256:2e986801428cd689c2358605289c90ab37d2b39e24808874971f54c99bcdc412
     depends_on:
       - victoriametrics
       - loki