GitHub Pages upgrade requires newer Ruby

Author: SethTisue

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0.5
+          ruby-version: 3.1.6
           bundler-cache: true
       - name: Set up coursier
         uses: coursier/[email protected]

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.0.5
+FROM ruby:3.1.6
 
 RUN gem install bundler:2.4.21