Bumpy used ruby to 2.6 to support Pygments 3.0.0

Author: marceltaeumel

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.4
+        ruby-version: 2.6
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
 
     - name: Run Jekyll to generate page