Add Safari Tech Preview to perf schema (#8050)

Co-authored-by: KS <kshampur@MacBook-Pro.local>

schemas/performance-artifact.json

@@ -14,6 +14,7 @@
             "refbrow",
             "fenix",
             "safari",
+            "safari-tp",
             "custom-car",
             "cstm-car-m"
           ],