Update create-issue.yml

.github/workflows/create-issue.yml

@@ -13,8 +13,8 @@ jobs:
           brew install gh
       - name: GH CLI
         run: |         
-          echo "POST_COMMIT_MESSAGE=$(git log --no-merges -1 --pretty=%B)" >> $GITHUB_ENV
-          gh issue create --title "Update Made in Public Repo" --body "test" -R microsoft/azuretipsandtricks-private
+          echo "::set-env name=POST_COMMIT_MESSAGE::$(git log --no-merges -1 --pretty=%B)"
+          gh issue create --title "Update Made in Public Repo" --body "${{ env.POST_COMMIT_MESSAGE }}" -R microsoft/azuretipsandtricks-private
 
         env:
           GITHUB_TOKEN: ${{ secrets.PRIVATE_REPO_PAT  }}