Readd setuptools_scm as dependency

This is needed to import the correct version.

pyproject.toml

@@ -9,11 +9,10 @@ license = { file = "LICENSE" }
 requires-python = ">=3.8"
 dependencies = [
     "numpy",
-    "pybind11>=2.10.1",
-    # "pyside2",
     "qtpy",
     "graphviz>=0.19",
     "matplotlib",
+    "setuptools_scm[toml]>=6.2",
 ]
 classifiers = [
     "Intended Audience :: Education",