Update Flux requirement from 0.14.21 to 0.14.21, 0.16

[dependabot]

Updates the requirements on Flux to permit the latest version.

Release notes

Sourced from Flux's releases.

v0.16.9

Flux v0.16.9

Diff since v0.16.8

Merged pull requests:

• Support Mooncake 0.5 (#2653) (@​yebai)

Changelog

Sourced from Flux's changelog.

Flux Release Notes

See also github's page for a complete list of PRs merged before each release.

v0.16.8 (January 2025)

This release includes the following changes:

• Added support in Flux.gradient and Flux.withgradient to alternative AD backends such as AutoEnzyme() and AutoMooncake().
• The default init_score value for early_stopping has been set to Inf (instead of 0) in order to prevent unexpected behavior if the defaults were not modified.

v0.16.7 (10 December 2025)

This patch release includes:

• Minor documentation fixes and housekeeping commits.
• Compatibility updates for downstream packages.

v0.16.6 (8 December 2025)

This patch release includes:

• Minor dependency bumps and CI updates.
• Preparatory changes ahead of v0.16.7.

v0.16.5 (23 July 2025)

This release includes:

• Fix typos in legacy tutorials documentation.([GitHub][2])
• Bump compatibility for AMDGPU in weak dependencies.([GitHub][2])
• Fix for unsafe_free! failure with certain CuArray configurations.([GitHub][2])

v0.16.4 (2 June 2025)

This release includes:

• Fix missing imports in FluxMPIExt.([GitHub][1])
• Add shape validation for convolution weight tensors.([GitHub][1])
• Disable and fix intermittent Reactant tests.([GitHub][1])
• Fix recurrent docstrings and pooling layer loading.([GitHub][1])
• Small test updates and miscellaneous doc fixes.([GitHub][1])

v0.16.3 (6 February 2025)

This release includes:

• Fix for cpu(dataloader) behavior.([GitHub][1])
• Addressed data loading and preprocessing pipeline issues.([GitHub][1])
• Resolved “Infinite time of gradient” edge case.([GitHub][1])

... (truncated)

Commits

• ce4b8a0 Bump version from 0.16.8 to 0.16.9
• 77fceb1 Support Mooncake 0.5 (#2653)
• d15c7dc Bump version from 0.16.7 to 0.16.8
• 6af8785 allow passing an ADType to train! (#2650)
• 43b0a91 extend gradient to take an ADType argument (#2645)
• 7589641 Enable other reactant tests (#2600)
• 2a91836 Set early_stopping default value for init_score to Inf (#2642)
• a8b99a3 fix docs (#2641)
• 64c3979 Bump version from 0.16.6 to 0.16.7
• fd7d0ba fix cuda ext for real (#2637)
• Additional commits viewable in compare view

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