bump mypy

[DimitriPapadopoulos]

Required to fix this CI warning:

pyproject.toml: [mypy]: Unrecognized option: strict_bytes = True

Indeed option --strict-bytes was added in mypy 1.15:

• https://mypy.readthedocs.io/en/stable/changelog.html#strict-bytes
• https://github.com/python/mypy/blob/master/CHANGELOG.md#--strict-bytes

[DimitriPapadopoulos]

Unfortunately mypy 1.14.1 is not available for Python 3.8, so I guess we have to live with the CI warning for now. Besides the warning is certainly the result of warn_unused_configs so it is expected:

cryptography/pyproject.toml

Line 144 in abc011b

warn_unused_configs = true

By the way, the documentation states:

This requires turning off incremental mode using incremental = False.

[reaperhulk]

If you look closer at our requirements pinning you'll see we pin to 1.15 on the versions of Python that support it already.

[DimitriPapadopoulos]

Yes, I've seen that, but the CI warning with Python 3.8 should be avoided if possible:

• You shouldn't need to actually run mypy under each supported version of Python, instead you could use option --python-version=3.8 with a recent version of Python.
• But then what's the point of running mypy for different versions of Python? I may be mistaken, but the source code seems identical for all versions of Python, with few exceptions:
  

  cryptography/release.py

  Lines 13 to 16 in 5cf5edf

  	if sys.version_info >= (3, 11):
  	import tomllib
  	else:
  	import tomli as tomllib

  
  

  cryptography/noxfile.py

  Lines 18 to 21 in 5cf5edf

  	if sys.version_info >= (3, 11):
  	import tomllib
  	else:
  	import tomli as tomllib

  
  

  cryptography/src/cryptography/utils.py

  Lines 31 to 38 in 5cf5edf

  	# If you're wondering why we don't use `Buffer`, it's because `Buffer` would
  	# be more accurately named: Bufferable. It means something which has an
  	# `__buffer__`. Which means you can't actually treat the result as a buffer
  	# (and do things like take a `len()`).
  	if sys.version_info >= (3, 9):
  	Buffer = typing.Union[bytes, bytearray, memoryview]
  	else:
  	Buffer = typing.ByteString

[DimitriPapadopoulos]

Superseded by #13001.