deps: Update dependency dask-core to v2026

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	Pending
dask-core	feature-nogil	major	>=2025.12.0 → >=2026.1.1	2026.1.2
dask-core	feature-backends	major	>=2025.12.0 → >=2026.1.1	2026.1.2
dask-core	feature-docs	major	>=2025.12.0 → >=2026.1.1	2026.1.2
dask-core	feature-lint	major	>=2025.12.0 → >=2026.1.1	2026.1.2

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Release Notes

dask/dask (dask-core)

v2026.1.1

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Changes

• No changes

See the Changelog for more information.

v2026.1.0

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Changes

• Remove the Python 2 Comment @​vipinkataria2209 (#​12229)
• Bump JamesIves/github-pages-deploy-action from 4.7.6 to 4.8.0 @​dependabot[bot] (#​12230)
• Fix changelog: distributed-pr -> pr-distributed @​mplough-kobold (#​12227)
• Support duck-typed Futures in task graph processing @​mrocklin (#​12213)
• Bump actions/setup-java from 4 to 5 @​dependabot[bot] (#​12057)
• Relax test_serialization @​crusaderky (#​12226)
• [cosmetic] Reorganise dependency groups in CI environment files @​crusaderky (#​12222)
• Review _array_expr_enabled() @​crusaderky (#​12217)
• Increase coverage; lower codecov threshold to pass @​crusaderky (#​12214)
• Test array expr on mindeps @​crusaderky (#​12216)
• Disable some Mac builds @​crusaderky (#​12218)
• Typing tweaks @​crusaderky (#​12215)
• [CI] unbreak codecov @​crusaderky (#​12211)
• Test array expr on Python 3.14 @​crusaderky (#​12212)
• Fix pickle compatibility for Python 3.14 @​mrocklin (#​12206)
• Remove deprecated dask._compatibility.entry_points @​crusaderky (#​12202)
• Tweak MacOS CI @​crusaderky (#​12200)
• Remove obsolete CI pins @​crusaderky (#​12199)
• Bump JamesIves/github-pages-deploy-action from 4.7.4 to 4.7.6 @​dependabot[bot] (#​12196)
• Bump actions/upload-artifact from 5 to 6 @​dependabot[bot] (#​12197)
• Bump actions/cache from 4 to 5 @​dependabot[bot] (#​12195)

See the Changelog for more information.

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