Python dependency: Update gssapi requirement from ==1.8.* to ==1.9.* in /web/regression

[dependabot[bot]]

Updates the requirements on gssapi to permit the latest version.

Commits

• ca046f4 Bump Python 3.13 test version
• c8504f7 Update CI to build CPython 3.13 wheels & drop 3.7
• cf9a337 Fix DCE symbol name logic on macOS
• 6e0b6b1 Update GHA action versions
• b72364d Enable the use of mypy --no-explicit-reexport on downstream projects
• e509231 Use MyST for markdown docs build
• b674a57 Re-add support for Cython 3
• 5c316ec Do not use Cython 3 on build deps
• 3a14a03 The syntax was incorrect so use just write
• b71bf97 Set explicit write permissions for publish step
• Additional commits viewable in compare view

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