Bump mpi4py from 4.0.1 to 4.0.3

Bumps [mpi4py](https://github.com/mpi4py/mpi4py) from 4.0.1 to 4.0.3.
- [Release notes](https://github.com/mpi4py/mpi4py/releases)
- [Changelog](https://github.com/mpi4py/mpi4py/blob/master/CHANGES.rst)
- [Commits](mpi4py/mpi4py@4.0.1...4.0.3)

---
updated-dependencies:
- dependency-name: mpi4py
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
-    "mpi4py==4.0.1",
+    "mpi4py==4.0.3",
     "executorlib==0.4.0",
     "numpy==1.26.4",
 ]