Update setuptools-scm[toml] requirement from >=6.2 to >=10.2.1 in /backend

[dependabot]

Updates the requirements on setuptools-scm[toml] to permit the latest version.

Release notes

Sourced from setuptools-scm[toml]'s releases.

setuptools-scm v10.2.1

Fixed

• Omit scm_version.json and scm_file_list.json from wheel .dist-info while still including them in sdists for fallback discovery. (#1473)

Commits

• ac108b2 Merge pull request #1475 from pypa/release/main
• b3beed6 Prepare release: setuptools-scm v10.2.1
• ec67f8c Merge pull request #1474 from RonnyPfannschmidt/fix/1473-omit-scm-metadata-fr...
• 08f22bd fix: lazy-import bdist_wheel and simplify unlink
• 82768f0 fix: omit SCM egg-info JSON from wheels
• 5b91e2f Merge pull request #1460 from pypa/dependabot/uv/uv-f4f52c089d
• 4ac1724 Merge pull request #1463 from pypa/release/main
• 474cc9c Prepare release: vcs-versioning v2.2.2
• 29c8f6c Merge pull request #1462 from RonnyPfannschmidt/fix/vcs-versioning-pytest-tim...
• 25d32ee fix: add missing pytest-timeout to vcs-versioning test dependencies (#1461)
• Additional commits viewable in compare view

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[albertotb]

Closing: backend/pyproject.toml is rendered from python-copier-template, so a change here would be reverted by the next sync. Ported upstream in python-copier-template#42 (together with #14), which will reach this repo as a sync PR.

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