bring Ruby and bundler versions in line with main site

Author: SethTisue

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.1.6
+          ruby-version: 3.2.6
           bundler-cache: true
       - name: Set up coursier
         uses: coursier/setup-action@v1.3.5

Dockerfile

@@ -1,6 +1,6 @@
-FROM ruby:3.1.6
+FROM ruby:3.2.6
 
-RUN gem install bundler:2.4.21
+RUN gem install bundler:2.6.5
 
 WORKDIR /srv/jekyll