Update alpine Docker tag to v3.23.4 (#4927)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

containers/egress-proxy/Dockerfile

@@ -1,5 +1,5 @@
 # Use Alpine Linux 3.22.0 for minimal footprint
-FROM alpine:3.23.3
+FROM alpine:3.23.4
 
 # Install squid from edge repository and create necessary directories
 RUN echo "https://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories \