open-source-silicon.dev

<https://github.com/RTimothyEdwards/open_pdks/issues/228|#228 CI currently broken? Centos 8 is EOL?>
New issue created by <https://github.com/mithro|mithro>
<https://github.com/RTimothyEdwards/open_pdks/actions/runs/1909078486|https://github.com/RTimothyEdwards/open_pdks/actions/runs/1909078486>

```
 CentOS Linux 8 - AppStream                      237  B/s |  38  B     00:00    
  Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

```
<https://github.com/RTimothyEdwards/open_pdks|RTimothyEdwards/open_pdks>