Tests.dockerfile in shopify-cli-2.15.6 vs Tests.dockerfile in shopify-cli-2.16.0

@@ -4,10 +4,10 @@
 FROM cimg/ruby:2.7.5
 
 RUN git config --global user.email "[e-mail]"
 RUN git config --global user.name "Development Lifecycle"
 
-RUN gem update bundler
+RUN gem install bundler -v 2.3.11
 
 WORKDIR /usr/src/app
 
 COPY Gemfile Gemfile.lock ./
 COPY shopify-cli.gemspec  shopify-cli.gemspec