[ci] Fix Coquelicot build
[ci] Fix Coquelicot build

New versions did remove the autogen.sh script in favor of plain
`autoreconf`

Note that the Coquelicot build documentation seems incorrect.

gares/coq,silene/coq,gares/coq,JasonGross/coq,JasonGross/coq,coq/coq,silene/coq,coq/coq,ejgallego/coq,Zimmi48/coq,coq/coq,Zimmi48/coq,ejgallego/coq,gares/coq,ejgallego/coq,SkySkimmer/coq,ejgallego/coq,SkySkimmer/coq,JasonGross/coq,JasonGross/coq,SkySkimmer/coq,Zimmi48/coq,gares/coq,SkySkimmer/coq,silene/coq,Zimmi48/coq,gares/coq,coq/coq