Bump cachix/install-nix-action from 12 to 16

[dependabot]

Bumps cachix/install-nix-action from 12 to 16.

Release notes

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

install-nix-action-v16

The last release didn't fix https://github.com/nektos/act correctly.

This release corrects that and adds a test (you need act from master branch).

install-nix-action-v15

• Enable flakes and the new CLI by default
• Fix #97: single installation for Act and Docker should be fixed
• Fix #91: retry official installation as it can sometimes return 400

install-nix-action-v14.1

github actions disable Spotlight by default now, so we don't have to do it in this action anymore

install-nix-action-v14

• Create X number of users where X = 2 * cpu cores
• Linux: fallback to single-user installation if there's no systemd (support for https://github.com/nektos/act)
• Fixes a subtle bug on self-hosted runners when installation fails

install-nix-action-v13

Adds support for install_options that allows passing custom installer options. Run sh <(curl -L https://nixos.org/nix/install) --help to see what's supported.

This feature is useful for installing/testing development versions of Nix.

Commits

• d56f3ce README: fix syntax
• 3db69e0 Merge pull request #111 from cachix/act
• 76f9967 try fixing act
• 7a6ac48 Update .github/workflows/test.yml
• 31bbb1e Update .github/workflows/test.yml
• 9489b6b Update .github/workflows/test.yml
• ac89927 Update .github/workflows/test.yml
• c5e83e5 Update .github/workflows/test.yml
• 5315c85 Test for act
• d045d9f Merge pull request #115 from zimbatm/bash-cleanup
• Additional commits viewable in compare view

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