Update ruby

Dockerfile

@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.4.2
+ARG RUBY_VERSION=3.4.5
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim AS base
 
 # Rails app lives here
@@ -25,7 +25,6 @@ RUN apt-get update -qq && \
 # Install application gems
 COPY Gemfile Gemfile.lock .ruby-version ./
 RUN --mount=type=secret,id=GITHUB_TOKEN \
-    gem install bundler &&\
     BUNDLE_GITHUB__COM="$(cat /run/secrets/GITHUB_TOKEN):x-oauth-basic" bundle install && \
     rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
     bundle exec bootsnap precompile --gemfile