Upgrade black version (#7089)

stdlib/os/__init__.pyi

@@ -240,6 +240,7 @@ class _Environ(MutableMapping[AnyStr, AnyStr], Generic[AnyStr]):
             putenv: Callable[[AnyStr, AnyStr], None],
             unsetenv: Callable[[AnyStr, AnyStr], None],
         ) -> None: ...
+
     def setdefault(self, key: AnyStr, value: AnyStr) -> AnyStr: ...  # type: ignore[override]
     def copy(self) -> dict[AnyStr, AnyStr]: ...
     def __delitem__(self, key: AnyStr) -> None: ...
@@ -471,6 +472,7 @@ if sys.platform != "win32":
     if sys.platform != "darwin":
         def getresuid() -> tuple[int, int, int]: ...
         def getresgid() -> tuple[int, int, int]: ...
+
     def getuid() -> int: ...
     def setegid(__egid: int) -> None: ...
     def seteuid(__euid: int) -> None: ...
@@ -482,6 +484,7 @@ if sys.platform != "win32":
     if sys.platform != "darwin":
         def setresgid(rgid: int, egid: int, sgid: int) -> None: ...
         def setresuid(ruid: int, euid: int, suid: int) -> None: ...
+
     def setreuid(__ruid: int, __euid: int) -> None: ...
     def getsid(__pid: int) -> int: ...
     def setsid() -> None: ...
@@ -618,6 +621,7 @@ if sys.platform != "win32":
         def pipe2(__flags: int) -> tuple[int, int]: ...  # some flavors of Unix
         def posix_fallocate(fd: int, offset: int, length: int) -> None: ...
         def posix_fadvise(fd: int, offset: int, length: int, advice: int) -> None: ...
+
     def pread(__fd: int, __length: int, __offset: int) -> bytes: ...
     def pwrite(__fd: int, __buffer: bytes, __offset: int) -> int: ...
     if sys.platform != "darwin":
@@ -902,7 +906,9 @@ else:
             def si_status(self) -> int: ...
             @property
             def si_code(self) -> int: ...
+
         def waitid(idtype: int, ident: int, options: int) -> waitid_result: ...
+
     def wait3(options: int) -> tuple[int, int, Any]: ...
     def wait4(pid: int, options: int) -> tuple[int, int, Any]: ...
     def WCOREDUMP(__status: int) -> bool: ...
@@ -950,6 +956,7 @@ if sys.platform != "win32":
         def __new__(cls, sched_priority: int) -> sched_param: ...
         @property
         def sched_priority(self) -> int: ...
+
     def sched_get_priority_min(policy: int) -> int: ...  # some flavors of Unix
     def sched_get_priority_max(policy: int) -> int: ...  # some flavors of Unix
     def sched_yield() -> None: ...  # some flavors of Unix
@@ -991,6 +998,7 @@ if sys.version_info >= (3, 8):
             def close(self) -> None: ...
             def __enter__(self: Self) -> Self: ...
             def __exit__(self, *args: Any) -> None: ...
+
         def add_dll_directory(path: str) -> _AddedDllDirectory: ...
     if sys.platform == "linux":
         MFD_CLOEXEC: int