Updated copyright year and Jekyll workflow

* Updated copyright year in index.html (This is a trivial change to test the automated build)

* Updated upload-artifact action to v4

* Updated ruby version in jekyll.yml using template in https://github.com/actions/starter-workflows/blob/main/pages/jekyll.yml

Author: jonblower

.github/workflows/jekyll.yml

@@ -34,7 +34,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        uses: ruby/setup-ruby@8575951200e472d5f2d95c625da0c7bec8217c42 # v1.161.0
+        # https://github.com/ruby/setup-ruby/releases/tag/v1.207.0
+        uses: ruby/setup-ruby@4a9ddd6f338a97768b8006bf671dfbad383215f4
         with:
           ruby-version: '3.1' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically

.github/workflows/pr.yml

@@ -19,7 +19,7 @@ jobs:
         build_only: true
         jekyll_build_options: -d _site
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v4
       with:
         name: page
         path: _site

index.html

@@ -105,6 +105,6 @@ <h5 class="list-group-item-heading"><img src="/img/GitHub-Mark-64px.png" width=3
 <div class="container footer">
   <hr>
   <p>
-    Copyright &copy; 2015-2024 The University of Reading.
+    Copyright &copy; 2015-2026 The University of Reading.
   </p>
 </div>