docs: pin sphinx-argparse to < 0.5.0 (deepmodeling#3988)

Pin sphinx-argparse to <0.5.0 due to sphinx-doc/sphinx-argparse#56.

Generated by the task: njzjz-bot/njzjz-bot#7.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Chores**
- Updated `sphinx-argparse` dependency to ensure compatibility by
restricting it to versions below `0.5.0`.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

pyproject.toml

@@ -89,7 +89,7 @@ docs = [
     "ase",
     "deepmodeling-sphinx>=0.1.0",
     "dargs>=0.3.4",
-    "sphinx-argparse",
+    "sphinx-argparse<0.5.0",
     "pygments-lammps",
     "sphinxcontrib-bibtex",
 ]