build(deps): update MLJ requirement from 0.20 to 0.20, 0.22 in the all-julia-packages group across 1 directory

[dependabot]

Updates the requirements on MLJ to permit the latest version.
Updates MLJ to 0.22.0

Release notes

Sourced from MLJ's releases.

v0.22.0

MLJ v0.22.0

Diff since v0.21.0

• (mildly breaking) The behaviour of levels and unique on CategoricalArrays has changed. (Such arrays are created in MLJ, for example, by coerce(array, Multiclass) or coerce(array, OrderedFactor). ) The levels and unique methods now return a CategoricalVector whereas previously they returned a vector of "raw" values. So, running levels(array) previously is equivalent to now running CategoricalArrays.unwrap.(levels(array)). The new behaviour is the result of breaking changes in CategoricalArrays.jl, on which MLJ.jl depends (#1172)

Merged pull requests:

• Bump actions/checkout from 4 to 5 (#1175) (@​dependabot[bot])
• Regenerate documentation. No new release. (#1182) (@​ablaom)
• Regenerate dev docs (#1183) (@​ablaom)
• Restore some integration tests for BetaML. (#1184) (@​ablaom)
• Bump CategoricalArrays, etc and major testing change 😱 (#1185) (@​ablaom)
• For a 0.22 release (#1186) (@​ablaom)

Closed issues:

• Reinstate CatBoost integraton test (#1092)
• Re-instate integration tests for scikit-learn models (#1119)
• Reinistate integration tests for SymbolicRegression? (#1152)
• Reinstate Outlier detection model s (#1153)
• Error when loading ContinuousEncoder (#1181)

Commits

• d94a3cd Merge pull request #1186 from JuliaAI/dev
• cc61b31 re-export DeterministicConstantRegressor/Classifier
• 290319f remove redundant exports (these now reexported from MLJTransforms)
• c73ef9f Merge pull request #1175 from JuliaAI/dependabot/github_actions/actions/check...
• 2542fb6 Merge pull request #1185 from JuliaAI/assorted-compat-updates
• 29d7fab pare down integration tests to a core set of well-maintained packages
• d60df51 bump CategoricalArrays = "1", StatisticalMeasures = "0.3", v=0.22.0
• d6defb0 Merge pull request #1184 from JuliaAI/dev
• ec2a62b whitespace
• 2611367 rm more BetaML models from integrations tests
• Additional commits viewable in compare view

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[trontrytel]

Will update after we make decisions about our ML and calibration examples