Update msdo-trufflehog.yml

Author: theangrytech-git

.github/workflows/msdo-trufflehog.yml

@@ -87,12 +87,12 @@ EOF
           gzip -c trufflehog.sarif | base64 -w 0 > trufflehog.sarif.base64
           encoded_sarif=$(cat trufflehog.sarif.base64)
 
-          curl -s -X POST \
+          cat <<EOF | curl -s -X POST \
             -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
             -H "Accept: application/vnd.github+json" \
             -H "Content-Type: application/json" \
             https://api.github.com/repos/${{ github.repository }}/code-scanning/sarifs \
-            -d @- <<EOF
+            -d @-
 {
   "commit_sha": "${{ github.sha }}",
   "ref": "${{ github.ref }}",