Division by zero issue with "pkgctl search"

For some search terms it seems like the Gitlab search API returns zero pages:

$ pkgctl search PKGBUILD                                                                          
📡 Querying GitLab: 1/1 [100%]    /usr/share/devtools/lib/api/gitlab.sh: line 120: 100 * next_page / total_pages : division by 0 (error token is "total_pages ")

This needs to be investigated and we should most likely handle this. Additionally we maybe need to report this as an issue to Gitlab.