Fix CI

Author: akoeplinger

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
         gem install bundler
         bundle install --jobs 4 --retry 3
     - name: Workaround accessibility insights issue with atom.xml
-      run: "echo 'enabled: true' > _data/workaround_accessibility_insights_bug.yml"
+      run: "mkdir -p _data && echo 'enabled: true' > _data/workaround_accessibility_insights_bug.yml"
     - name: Build Jekyll
       run: bundle exec jekyll build
     - name: Markdownlint