chore: upgrade to rails 7.1 and ruby 3.4 (#3457)

Dockerfile

@@ -1,17 +1,13 @@
-FROM ruby:3.2.2-bullseye AS base
+FROM ruby:3.4.6-bookworm AS base
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
-RUN apt-get update \
-  && apt-get install -y --no-install-recommends \
-      software-properties-common dirmngr apt-transport-https \
-  && (curl -sL https://deb.nodesource.com/setup_20.x | bash -) \
-  && rm -rf /var/lib/apt/lists/*
+RUN (curl -sL https://deb.nodesource.com/setup_20.x | bash -)
 
 # Install main dependencies
 RUN apt-get update && \
   apt-get install -y --no-install-recommends \
   build-essential  \
-  netcat \
+  netcat-openbsd \
   curl \
   libmariadb-dev \
   libcap2-bin \
@@ -31,7 +27,7 @@ RUN mkdir -p /opt/postal/app /opt/postal/config
 WORKDIR /opt/postal/app
 
 # Install bundler
-RUN gem install bundler -v 2.5.6 --no-doc
+RUN gem install bundler -v 2.7.2 --no-doc
 
 # Install the latest and active gem dependencies and re-run
 # the appropriate commands to handle installs.