add SustainabilityReport sample

tabs/arena_sxs.py

@@ -4,6 +4,7 @@ from extractors.model_runner import models, run_extract_parallel
 
 sample_files = {
     "Portfolio Statement": "data/SamplePortfolioStatement.pdf",
+    "Sustainabililty Report": "data/SampleSustainabilityReport.pdf",
     "Table Of Contents": "data/TableOfContents.pdf",
 }