deps(python): bump greenlet from 3.3.0 to 3.3.1 in /backend

[dependabot]

Bumps greenlet from 3.3.0 to 3.3.1.

Changelog

Sourced from greenlet's changelog.

3.3.1 (2026-01-23)

• Publish Windows ARM binary wheels, where available.
• Fix compilation for 3.14t on Windows.
• Publish Windows 3.14t binary wheels for Intel.
• Switch from Appveyor for Windows to Github Actions.
• Fix compilation on MIPS with GCC 15 and binutils 2.45. See PR 487 by Rosen Penev <https://github.com/python-greenlet/greenlet/pull/487>_. Note that this is not a platform tested by this project's CI.
• Move most project metadata into the static pyproject.toml file. This updates licensing information to use the modern License-Expression field. See PR 480 by mrbean-bremen <https://github.com/python-greenlet/greenlet/pull/480/>_.

Commits

• d1a0a3f Preparing release 3.3.1
• bb11806 Merge pull request #482 from tacaswell/cp315_compat
• 0708965 Change note for #480
• 62ff68f pyproject: It's tool.zest-releaser, not tools.zest-releaser.
• 7081130 Move most of setuptools attributes to pyproject.toml
• b462f75 Add change note for #487.
• 918e888 Merge pull request #486 from python-greenlet/dependabot/github_actions/github...
• c5e2e6f Bump actions/upload-artifact from 5 to 6 in the github-actions group
• 54f257d Merge pull request #487 from neheb/mips
• b2cf41d Merge pull request #490 from python-greenlet/windows-on-github
• Additional commits viewable in compare view

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Summary by cubic

Upgrade backend dependency greenlet from 3.3.0 to 3.3.1 to improve platform support (Windows ARM binaries, Python 3.14t build fixes). No code changes; only pyproject.toml and uv.lock updated.

^{Written for commit 469cd82. Summary will update on new commits.}

[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

[cubic-dev-ai]

No issues found across 2 files

[dependabot]

Looks like greenlet is up-to-date now, so this is no longer needed.