Bump cachix/install-nix-action from 20 to 22

[dependabot[bot]]

Bumps cachix/install-nix-action from 20 to 22.

Release notes

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

install-nix-action-v22

• Nix 2.16.1
• Fix issues with System Integrity Protection when using macos-12

install-nix-action-v21

• pin Nix to 2.15.1 (recent releases broke too many things)
• fix the action to work on custom containers

Commits

• 6ed004b Merge pull request #184 from cachix/macos-bump
• e278794 Nix: 2.15.1 -> 2.16.1
• 8ab3881 use system certs
• 16b9514 Merge pull request #182 from l0b0/feat/configure-editors
• 2c203fd feat: Configure editors
• 4b933aa Nix: 2.15.1
• 3580693 Merge pull request #179 from joergdw/fix-action-path
• 3eb7a24 Merge pull request #178 from cachix/docs/149
• 840ed7c Document how to pass env vars to modern nix commands
• b2f4229 Fix action to make it work on custom containers;
• Additional commits viewable in compare view

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