some multiline stuff I don't fully understand

.github/workflows/update-contrib.yml

@@ -42,11 +42,18 @@ jobs:
         git add _data/people_list.yml
         git commit -m "Update contributors on $(date +'%Y-%m-%d')" || ${echo "No changes to commit" && false}
 
+    - name: Grab content from summary file
+      id: getsummary
+      run: |
+        echo 'foo<<EOF' >> $GITHUB_OUTPUT
+        echo $(cat summary.txt) >> $GITHUB_OUTPUT
+        echo 'EOF' >> $GITHUB_OUTPUT
+
     # Create a pull request
     - name: Create Pull Request
       uses: peter-evans/create-pull-request@v5
       with:
         commit-message: "Update contributors on $(date +'%Y-%m-%d')"
         branch: update-contributors
         title: "Update contributors"
-        body: "$(cat summary.txt)"
+        body: "${{ env.foo }}"