fix: Git no longer supports git:// urls

https://www.reddit.com/r/archlinux/comments/teql3v/github_no_longer_supports_git_some_pkgbuilds/

contrib/PKGBUILD

···
 depends=('python' 'python-pyxdg')
 makedepends=('git' 'python-setuptools' 'python-setuptools-scm' 'scdoc')
 provides=('qbpm')
-source=("git://github.com/pvsr/qbpm")
+source=("git+https://github.com/pvsr/qbpm")
 
 pkgver() {
   cd qbpm