PEP518: update toml

Signed-off-by: Aleksei Stepanov <penguinolog@gmail.com>

Author: penguinolog

pyproject.toml

@@ -4,6 +4,7 @@
 requires = [
     "setuptools >= 21.0.0,!=24.0.0,!=34.0.0,!=34.0.1,!=34.0.2,!=34.0.3,!=34.1.0,!=34.1.1,!=34.2.0,!=34.3.0,!=34.3.1,!=34.3.2,!=36.2.0",  # PSF/ZPL
     "wheel",
+    "setuptools_scm",
 ]
 
 [tool.black]