chore(deps): update grafana/promtail docker tag to v3

Author: renovate[bot]

build-images.sh

@@ -10,7 +10,7 @@ repobase="${REPOBASE:-ghcr.io/nethserver}"
 # Configure the image name
 reponame="nethsecurity-controller"
 controller_version="2.0.0"
-promtail_image="docker.io/grafana/promtail:2.9.15"
+promtail_image="docker.io/grafana/promtail:3.5.2"
 loki_image="docker.io/grafana/loki:2.9.15"
 prometheus_image="docker.io/prom/prometheus:v3.5.0"
 grafana_image="docker.io/grafana/grafana:12.0.2"