Fixing json encoding for virustotal release notes generation

Author: kenshaw

.github/workflows/release.yml

@@ -232,5 +232,6 @@ jobs:
             -H "Accept: application/vnd.github+json" \
             -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
-            -d "{\"body\": \"$body\"}" \
+            --variable '%body' \
+            --expand-data '{"body": "{{body:trim:json}}"}' \
             $url