build: capturing new migrations.

.github/workflows/capture_new_migrations.yml

@@ -197,17 +197,11 @@ jobs:
         data=$(mysql -h 127.0.0.1 -uedxapp001 -ppassword -e "select app, name from django_migrations  ORDER by -id limit $diff;" edxapp;)
         formatted_data=$(echo "$data" | tr '\t' ' ')
         echo "CUSTOM_MESSAGE=$formatted_data" >> $GITHUB_ENV
-        echo "$formatted_data" > multi_line_data.txt
       shell: bash
-
-    - name: Comment PR
       uses: thollander/actions-comment-pull-request@v2
       with:
         message: |
-          Here is the data:
-          ```
-          $(cat multi_line_data.txt)
-          ```
+          ${{ formatted_data }}
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   # This job aggregates test results. It's the required check for branch protection.