Refs #3646 -- invoke twine correctly (#3789)

diff --git a/release.py b/release.py
index 0894d23..f10eed4 100644
--- a/release.py
+++ b/release.py
@@ -133,7 +133,7 @@
     response.raise_for_status()
     wait_for_build_completed(session)
     paths = download_artifacts(session)
-    run("twine", "upload", " ".join(paths))
+    run("twine", "upload", *paths)
 
 
 if __name__ == "__main__":