Add setuptools as a package dep for the version

Author: schloerke

pyproject.toml

@@ -19,7 +19,12 @@ classifiers = [
     "Typing :: Typed",
 ]
 dynamic = ["version"]
-dependencies = ["requests>=2.31.0,<3", "packaging", "typing-extensions"]
+dependencies = [
+    "requests>=2.31.0,<3",
+    "packaging",
+    "typing-extensions",
+    "setuptools-scm;python_version>='3.12'",
+]
 
 [project.urls]
 Source = "https://github.com/posit-dev/posit-sdk-py"