ci: Fix public suffix data file path

[ChristophWurst]

Previous cron action runs failed with

Run curl --output resources/resources/public_suffix_list.dat https://publicsuffix.org/list/public_suffix_list.dat
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Warning: Failed to open the file resources/resources/public_suffix_list.dat: 
Warning: No such file or directory

  0  309k    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (23) Failure writing output to destination
Error: Process completed with exit code 23.

[ChristophWurst]

Test runs at https://github.com/nextcloud/mail/actions/runs/12232232761/job/34116879618