MESH-2092 Bump pyopenssl from 25.3.0 to 26.0.0 in the dependencies group

[dependabot]

Bumps the dependencies group with 1 update: pyopenssl.

Updates pyopenssl from 25.3.0 to 26.0.0

Changelog

Sourced from pyopenssl's changelog.

26.0.0 (2026-03-15)

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

Commits

• 358cbf2 Prepare for 26.0.0 release (#1487)
• a8d28e7 Bump actions/cache from 4 to 5 (#1486)
• 6fefff0 Add aws-lc compatibility to tests and CI (#1476)
• a739f96 Bump actions/download-artifact from 8.0.0 to 8.0.1 (#1485)
• 8b4c66b Bump actions/upload-artifact in /.github/actions/upload-coverage (#1484)
• 02a5c78 Bump actions/upload-artifact from 6.0.0 to 7.0.0 (#1483)
• d973387 Bump actions/download-artifact from 7.0.0 to 8.0.0 (#1482)
• 57f09bb Fix buffer overflow in DTLS cookie generation callback (#1479)
• d41a814 Handle exceptions in set_tlsext_servername_callback callbacks (#1478)
• 7b29beb Fix not using a cryptography wheel on uv (#1475)
• Additional commits viewable in compare view

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[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
2931	2719	93%	85%	🟢

New Files

No new covered files...

Modified Files

No covered modified files...

updated for commit: 1e9c7e9 by action🐍

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud