chore(deps): bump cachix/cachix-action from v7 to v8
chore(deps): bump cachix/cachix-action from v7 to v8

Bumps [cachix/cachix-action](https://github.com/cachix/cachix-action) from v7 to v8.
- [Release notes](https://github.com/cachix/cachix-action/releases)
- [Commits](https://github.com/cachix/cachix-action/compare/v7...6e4751ed42b22f60165d3f266cfa4cce66ae406d)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
rpearce/robertwpearce.com,rpearce/robertwpearce.com,rpearce/robertwpearce.com