GitLab

* [ci]: Bump actions/checkout from 1 to 4 in the ci-dependencies group

Bumps the ci-dependencies group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 1 to 4
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v1...v4

)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: ci-dependencies
...
Signed-off-by: dependabot[bot] <support@github.com>

* downgrade a few

---------
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* [ci] upgrade actions/checkout to v2.4.0

* re-create GITHUB_WORKSPACE

* dont update cuda

* actually revert cuda

* use GitHub Actions to re-generate R configure

* Update R-package/README.md
Co-authored-by: James Lamb <jaylamb20@gmail.com>
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* build CRAN R-package on Azure with every commit and attach to releases

* test CI

* fix path

* revert CI test

* run R CRAN checks on Solaris by optional workflow

* Update triggering_comments.yml

* Update r_solaris.yml

* Update optional_checks.yml

* Update triggering_comments.yml

* Update run_rhub_solaris_checks.R

* Update r_solaris.yml

* Update run_rhub_solaris_checks.R

* Update r_solaris.yml

* simplify code

* fix lint and address review comments

* improve experience with optional GitHub workflows

* Update README.md

* Update r_artifacts.yml

* Update optional_checks.yml

* continue

* Update triggering_comments.yml

* Update README.md

* Update r_artifacts.yml

* Update r_artifacts.yml

* Update r_artifacts.yml

* Update r_valgrind.yml

* Update r_artifacts.yml

* Update r_valgrind.yml

* Update r_valgrind.yml

* Update r_valgrind.yml

* add docstrings to fix lint

* better formatting for multi-line commands