GitLab

* [ci] fix GPG key download for R Linux jobs

* force use of the new config file

* empty commit

* Update regression_objective.hpp

* Update regression_objective.hpp

Maybe still need a (1.0 - alpha)

* fix position in percentile calculation

* fix regression metric threshold for l1

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Co-authored-by: shiyu1994 <shiyu_k1994@qq.com>

* set gpu device id in open mp threads

* move SetCUDADevice outside for loop

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Co-authored-by: James Lamb <jaylamb20@gmail.com>

* enforce dask version to be >=2023.5.0

* fix Python 3.7 builds

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Co-authored-by: James Lamb <jaylamb20@gmail.com>

* add l1 metric for cuda_exp

* add huber/fair metric for cuda_exp

* add poisson/mape/gamma/gamma_deviance/tweedie  metrics for cuda_exp

* fix cpplint error

* fix return  error