Bump ruby version in github actions script (#410)

Author: DomGarguilo

.github/workflows/jekyll.yaml

@@ -34,7 +34,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.6
+        ruby-version: 3.2.2
     - name: Cache gems
       uses: actions/cache@v3
       with: