Add py312 to stdlibs

Author: hugovk

isort/stdlibs/__init__.py

@@ -1,2 +1,2 @@
 from . import all as _all
-from . import py3, py36, py37, py38, py39, py310, py311
+from . import py3, py36, py37, py38, py39, py310, py311, py312

isort/stdlibs/py3.py

@@ -1,3 +1,11 @@
-from . import py36, py37, py38, py39, py310, py311
+from . import py36, py37, py38, py39, py310, py311, py312
 
-stdlib = py36.stdlib | py37.stdlib | py38.stdlib | py39.stdlib | py310.stdlib | py311.stdlib
+stdlib = (
+    py36.stdlib
+    | py37.stdlib
+    | py38.stdlib
+    | py39.stdlib
+    | py310.stdlib
+    | py311.stdlib
+    | py312.stdlib
+)

tests/unit/test_importable.py

@@ -33,6 +33,7 @@ def test_importable():
     import isort.stdlibs.py39
     import isort.stdlibs.py310
     import isort.stdlibs.py311
+    import isort.stdlibs.py312
     import isort.utils
     import isort.wrap
     import isort.wrap_modes