Update Dockerfile.latest to alpine 3.18

Author: tomkuba

Dockerfiles/Dockerfile.latest

@@ -30,7 +30,7 @@ RUN set -eux \
 	&& find /usr/lib/ -name '*.pyc' -print0 | xargs -0 -n1 rm -rf
 
 
-FROM alpine:3.16 as production
+FROM alpine:3.18 as production
 ARG VERSION
 # https://github.com/opencontainers/image-spec/blob/master/annotations.md
 #LABEL "org.opencontainers.image.created"=""