filter out mongosh draft releases when determining latest (#645)

Author: nbbeeken

.evergreen/mongosh_dl.py

@@ -50,6 +50,8 @@ def _get_latest_version():
     for item in data:
         if item["prerelease"]:
             continue
+        if item.get("draft"):
+            continue
         return item["tag_name"].replace("v", "").strip()