Bump pyiron-workflow from 0.15.2 to 0.15.4

Bumps [pyiron-workflow](https://github.com/pyiron/pyiron_workflow) from 0.15.2 to 0.15.4.
- [Release notes](https://github.com/pyiron/pyiron_workflow/releases)
- [Commits](pyiron/pyiron_workflow@pyiron_workflow-0.15.2...pyiron_workflow-0.15.4)

---
updated-dependencies:
- dependency-name: pyiron-workflow
  dependency-version: 0.15.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -25,7 +25,7 @@ classifiers = [
 dependencies = [
     "numpy==1.26.4",
     "pandas==2.3.1",
-    "pyiron-workflow==0.15.2",
+    "pyiron-workflow==0.15.4",
     "pyiron-workflow-atomistics==0.0.3",
     "pyiron-lammps==0.4.6",
     "ase==3.26.0",