chore(deps): update dependency pyopenssl to v26

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pyOpenSSL (source)	==25.3.0 → ==26.3.0

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Release Notes

pyca/pyopenssl (pyOpenSSL)

v26.3.0

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Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Dropped support for Python 3.8.
• The minimum cryptography version is now 49.0.0.
• Removed deprecated OpenSSL.crypto.X509Req, OpenSSL.crypto.dump_certificate_request, and OpenSSL.crypto.load_certificate_request. cryptography.x509 should be used instead.
• OpenSSL.SSL.Connection.set_session now raises ValueError if the Session was obtained from a Connection that was using a different Context than this one. OpenSSL requires (but does not verify) that sessions only be re-used with a compatible SSL_CTX, so this contract is now enforced.

Deprecations:
^^^^^^^^^^^^^

• Deprecated OpenSSL.crypto.PKey.generate_key and OpenSSL.crypto.PKey.check. The key generation and loading APIs in cryptography should be used instead.
• Deprecated OpenSSL.crypto.dump_privatekey. The serialization APIs on cryptography private key types should be used instead.
• Deprecated all the mutable APIs on OpenSSL.crypto.X509: set_version, set_pubkey, sign, set_serial_number, gmtime_adj_notAfter, gmtime_adj_notBefore, set_notBefore, set_notAfter, set_issuer, and set_subject. cryptography.x509.CertificateBuilder should be used instead.
• Deprecated OpenSSL.SSL.Context.set_passwd_cb. Users should decrypt and load their private keys themselves, with cryptography's key loading APIs, and then call OpenSSL.SSL.Context.use_privatekey.
• Deprecated OpenSSL.crypto.X509Name, as well as the remaining APIs that consume or return it: OpenSSL.crypto.X509.get_issuer, OpenSSL.crypto.X509.get_subject, and OpenSSL.SSL.Context.set_client_ca_list. The APIs in cryptography.x509 should be used instead.

Changes:
^^^^^^^^

• OpenSSL.SSL.Connection.get_client_ca_list now takes an as_cryptography keyword-argument. When True is passed then cryptography.x509.Name are returned, instead of OpenSSL.crypto.X509Name. In the future, passing False (the default) will be deprecated.

v26.2.0

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Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Removed deprecated OpenSSL.crypto.X509Extension, OpenSSL.crypto.X509Req.add_extension, OpenSSL.crypto.X509Req.get_extensions, OpenSSL.crypto.X509.add_extension, OpenSSL.crypto.X509.get_extensions. cryptography.x509 should be used instead.
• It is now an error to calling any mutating method on OpenSSL.SSL.Context after it has been used to create a Connection. This was previously deprecated and has always been unsafe.

Deprecations:
^^^^^^^^^^^^^

Changes:
^^^^^^^^

• Maximum supported cryptography version is now 48.x.
• Added OpenSSL.SSL.Connection.set_options to set options on a per-connection basis.

v26.1.0

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Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Deprecations:
^^^^^^^^^^^^^

Changes:
^^^^^^^^

• Maximum supported cryptography version is now 47.x.
• Fixed X509Name field setters to correctly pass the value length to OpenSSL. Previously, values containing NUL bytes would be silently truncated, causing a divergence between the stored ASN.1 value and the value visible from Python. Credit to BudongJW for reporting the issue. CVE-2026-40475

v26.0.0

Compare Source

Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Dropped support for Python 3.7.
• The minimum cryptography version is now 46.0.0.

Deprecations:
^^^^^^^^^^^^^

Changes:
^^^^^^^^

• Added support for using aws-lc instead of OpenSSL.
• Properly raise an error if a DTLS cookie callback returned a cookie longer than DTLS1_COOKIE_LENGTH bytes. Previously this would result in a buffer-overflow. Credit to dark_haxor for reporting the issue. CVE-2026-27459
• Added OpenSSL.SSL.Connection.get_group_name to determine which group name was negotiated.
• Context.set_tlsext_servername_callback now handles exceptions raised in the callback by calling sys.excepthook and returning a fatal TLS alert. Previously, exceptions were silently swallowed and the handshake would proceed as if the callback had succeeded. Credit to Leury Castillo for reporting this issue. CVE-2026-27448

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