adds py39 pyproject.toml (#2380)

bibhabasumohapatra · vfdev-5 · web-flow · commit f46ea1c24c16 · 2021-12-21T10:50:44.000+01:00
Co-authored-by: vfdev &lt;vfdev.5@gmail.com&gt;
diff --git a/pyproject.toml b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 120
-target-version = ['py37', 'py38']
+target-version = ['py37', 'py38', 'py39']
 include = '\.pyi?$'
 exclude = '''
 
