Update gzip for 3.14 (#14237)

* Update gzip for 3.14

* [pre-commit.ci] auto fixes from pre-commit.com hooks

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Author: 3 people

stdlib/@tests/stubtest_allowlists/py314.txt

@@ -2,14 +2,6 @@
 # TODO: New errors in Python 3.14 that need to be fixed or moved below
 # ====================================================================
 
-compression.gzip.GzipFile.readinto
-compression.gzip.GzipFile.readinto
-compression.gzip.GzipFile.readinto1
-compression.gzip.GzipFile.readinto1
-compression.gzip.compress
-gzip.GzipFile.readinto
-gzip.GzipFile.readinto1
-gzip.compress
 multiprocessing.managers.BaseListProxy.clear
 multiprocessing.managers.BaseListProxy.copy
 multiprocessing.managers.DictProxy.__ior__

stdlib/gzip.pyi

@@ -1,6 +1,6 @@
 import sys
 import zlib
-from _typeshed import ReadableBuffer, SizedBuffer, StrOrBytesPath
+from _typeshed import ReadableBuffer, SizedBuffer, StrOrBytesPath, WriteableBuffer
 from io import FileIO, TextIOWrapper
 from typing import Final, Literal, Protocol, overload
 from typing_extensions import TypeAlias
@@ -157,8 +157,17 @@ class GzipFile(BaseStream):
     def seek(self, offset: int, whence: int = 0) -> int: ...
     def readline(self, size: int | None = -1) -> bytes: ...
 
+    if sys.version_info >= (3, 14):
+        def readinto(self, b: WriteableBuffer) -> int: ...
+        def readinto1(self, b: WriteableBuffer) -> int: ...
+
 class _GzipReader(DecompressReader):
     def __init__(self, fp: _ReadableFileobj) -> None: ...
 
-def compress(data: SizedBuffer, compresslevel: int = 9, *, mtime: float | None = None) -> bytes: ...
+if sys.version_info >= (3, 14):
+    def compress(data: SizedBuffer, compresslevel: int = 9, *, mtime: float = 0) -> bytes: ...
+
+else:
+    def compress(data: SizedBuffer, compresslevel: int = 9, *, mtime: float | None = None) -> bytes: ...
+
 def decompress(data: ReadableBuffer) -> bytes: ...