Add libheif dependencies to setup-ruby action to unbreak media_attachment_spec.rb on latest pre-release yet rolled out runner image (#39110)

Co-authored-by: Nicholas La Roux <larouxn@gmail.com>

.github/actions/setup-ruby/action.yml

@@ -14,7 +14,13 @@ runs:
       shell: bash
       run: |
         sudo apt-get update
-        sudo apt-get install -y libicu-dev libidn11-dev libvips42 ${{ inputs.additional-system-dependencies }}
+        sudo apt-get install --no-install-recommends -y \
+          libicu-dev \
+          libidn11-dev \
+          libvips42 \
+          libheif-plugin-aomdec \
+          libheif-plugin-libde265 \
+          ${{ inputs.additional-system-dependencies }}
 
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1