chore(deps): update docker.io/library/alpine docker tag

Dockerfile

@@ -1,10 +1,10 @@
-# renovate: datasource=repology depName=alpine_3_18/iptables versioning=loose
+# renovate: datasource=repology depName=alpine_3_19/iptables versioning=loose
 ARG IPTABLES_VERSION=1.8.9-r2
 # renovate: datasource=github-releases depName=kubernetes/dns
 ARG KUBERNETES_DNS_VERSION=1.23.0
 
 
-FROM docker.io/library/alpine:3.18.6@sha256:11e21d7b981a59554b3f822c49f6e9f57b6068bb74f49c4cd5cc4c663c7e5160 as iptables-installer
+FROM docker.io/library/alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b as iptables-installer
 
 ARG IPTABLES_VERSION
 # ARGs are only available during build-time. we include them as ENVs, too, so they are available in image metadata and at run-time.