Chore: Upgrade Alpine base image to 3.18.3 (#74984)

scripts/drone/utils/images.star

@@ -14,7 +14,7 @@ images = {
     "node": "node:{}-alpine".format(nodejs_version),
     "cloudsdk": "google/cloud-sdk:431.0.0",
     "publish": "grafana/grafana-ci-deploy:1.3.3",
-    "alpine": "alpine:3.17.1",
+    "alpine": "alpine:3.18.3",
     "ubuntu": "ubuntu:22.04",
     "curl": "byrnedo/alpine-curl:0.1.8",
     "plugins_slack": "plugins/slack",