Action causes "Failed to remove 'http.https://github.com/.extraheader' from the git config" warning

[csadorf]

Running this action can produce a warning "Failed to remove 'http.https://github.com/.extraheader' from the git config", see for example here: https://github.com/aiidalab/aiidalab-widgets-base/actions/runs/144700383

The warning is likely caused, because the preceding checkout step cannot properly execute its post-step, because the repository has been mounted onto the aiidalab container which causes a change in permissions. This means that the repository can no longer be removed with the default permissions.