Bump cachix/install-nix-action from 16 to 19

[dependabot[bot]]

Bumps cachix/install-nix-action from 16 to 19.

Release notes

Sourced from cachix/install-nix-action's releases.

install-nix-action-v19

• expose github_access_token option and use the default github token by default to prevent rate limiting
• support --no-daemon installation

install-nix-action-v18

• Fix nodejs warnings & simplify maintenance
• Use python3 when determining number of cores
• Collapse installer log messages

install-nix-action-v17

• curl for downloading the installer is now in quiet mode (since all the bugs have been addressed)
• ensure user profile comes before default profile in PATH
• support https://github.com/actions-runner-controller/actions-runner-controller by using sudo in more places

Commits

• 5c11eae Merge pull request #158 from cachix/fix-test
• 846213d update tests
• bd6084e Merge pull request #156 from InternetUnexplorer/update-readme
• 67388ca Merge pull request #157 from zimbatm/default-token
• a4b8aaf Fix rate-limits by using github.token by default
• 70980f0 clarify behavior of github_access_token option
• 25d64bb Merge pull request #153 from InternetUnexplorer/master
• b95f682 fix typo in github_access_token option
• b15708f Merge pull request #152 from zimbatm/github-access-token
• c04fcbc add github_access_token option
• Additional commits viewable in compare view

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[dependabot[bot]]

Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot rebase.

[dependabot[bot]]

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