Update pydot requirement from <3.1.0 to <4.1.0

Updates the requirements on [pydot](https://github.com/pydot/pydot) to permit the latest version.
- [Changelog](https://github.com/pydot/pydot/blob/main/ChangeLog)
- [Commits](pydot/pydot@pydot-0.9.10...v4.0.0)

---
updated-dependencies:
- dependency-name: pydot
  dependency-version: 4.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

setup.py

@@ -50,7 +50,7 @@ def read(fname):
     "numpy ==1.26.4",
     "pandas >= 1.4.0, < 2.2.0",
     "plotly < 6.0",
-    "pydot < 3.1.0",
+    "pydot < 4.1.0",
     "pygeos < 0.15.0",
     "pypower < 5.2.0",
     "pyproj >= 3.0.0, < 3.8.0",