Cachix auth token has expired

[sisp]

Describe the problem

Our CI jobs that use Nix are currently failing with this error:

Cachix Auth token has expired.

See, e.g., https://github.com/copier-org/copier/actions/runs/12802926087/job/35694784545.

Would you mind taking a look, @yajo?

Template

n/a

To Reproduce

No response

Logs

Cachix: using cache copier
  /home/runner/.nix-profile/bin/cachix use copier
  
  /home/runner/work/_actions/cachix/cachix-action/v15/dist/main/index.js:1702
                  error = new Error(`The process '${this.toolPath}' failed with exit code ${this.processExitCode}`);
                          ^
  
  Error: The process '/home/runner/.nix-profile/bin/cachix' failed with exit code 1
      at ExecState._setResult (/home/runner/work/_actions/cachix/cachix-action/v15/dist/main/index.js:1702:25)
      at ExecState.CheckComplete (/home/runner/work/_actions/cachix/cachix-action/v15/dist/main/index.js:1685:18)
      at ChildProcess.<anonymous> (/home/runner/work/_actions/cachix/cachix-action/v15/dist/main/index.js:1579:27)
      at ChildProcess.emit (node:events:519:28)
      at maybeClose (node:internal/child_process:1105:16)
      at ChildProcess._handle.onexit (node:internal/child_process:305:5)
  
  Node.js v20.18.0
  Binary cache copier doesn't exist or you don't have access. Error: Cachix Auth token has expired.

Expected behavior

The CI jobs should work. 😉

Screenshots/screencasts/logs

No response

Operating system

Linux

Operating system distribution and version

n/a

Copier version

n/a

Python version

n/a

Installation method

n/a

Additional context

No response