chore(deps): bump cachix/install-nix-action from V28 to 29

Bumps cachix/install-nix-action from V28 to 29. This release includes the previously tagged commit.

Release notes

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

v29

Bumps Nix to 2.24.8 to fix CVE-2024-47174

Commits

• 9f70348 Merge pull request #215 from Mic92/nix-bump
• 4f91dc2 Nix: 2.24.6 -> 2.24.7
• See full diff in compare view

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