chore(iast): propagate python executable (#11084)

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setup.py

@@ -343,6 +343,7 @@ def build_extension_cmake(self, ext):
             "-S{}".format(ext.source_dir),  # cmake>=3.13
             "-B{}".format(cmake_build_dir),  # cmake>=3.13
             "-DPython3_ROOT_DIR={}".format(sysconfig.get_config_var("prefix")),
+            "-DPYTHON_EXECUTABLE={}".format(sys.executable),
             "-DCMAKE_BUILD_TYPE={}".format(ext.build_type),
             "-DLIB_INSTALL_DIR={}".format(output_dir),
             "-DEXTENSION_NAME={}".format(extension_basename),