Update pyproject.toml

Author: jan-janssen

pyproject.toml

@@ -28,7 +28,7 @@ jobflow = [
     "jobflow>=0.1.18,<=0.2.0",
 ]
 pyiron = [
-    "pyiron_base>=0.11.10,<=0.12.0",
+    "pyiron_base>=0.11.10,<=0.15.5",
 ]
 plot = [
     "pygraphviz>=1.10,<=1.14",