fix: properly format JSON output for check run API

Co-Authored-By: Aaron <AJ> Steers <[email protected]>

.github/workflows/dummy_check_result.yml

@@ -32,7 +32,7 @@ jobs:
             -f status="completed" \
             -f conclusion="failure" \
             -f details_url="https://www.google.com/search?q=test-failure" \
-            -f output="{\"title\":\"Test Results\",\"summary\":\"This is a test check using direct API calls.\"}")
+            -f output='{"title":"Test Results","summary":"This is a test check using direct API calls."}')
           
           # Get the check run ID
           check_id=$(echo "$response" | jq -r '.id')