Fix a minor issue with script runner when the value itself evaluates …

…to a falsey value (#697)

**Pull Request Checklist**
- [ ] Fixes #<!--issue number goes here-->
- [ ] Tests added
- [ ] Documentation/examples added
- [ ] [Good commit messages](https://cbea.ms/git-commit/) and/or PR
title

**Description of PR**
Currently, ...

This PR adds/changes/fixes...

Signed-off-by: Sambhav Kothari <[email protected]>

src/hera/workflows/runner.py

@@ -94,7 +94,7 @@ def _runner(entrypoint: str, kwargs_list: Any) -> str:
     # convert the kwargs list to a dict
     kwargs = {}
     for kwarg in kwargs_list:
-        if not kwarg.get("name") or not kwarg.get("value"):
+        if "name" not in kwarg or "value" not in kwarg:
             continue
         # sanitize the key for python
         key = serialize(kwarg["name"]).replace("-", "_")