fix(library/module): sign error is circular module dependency is detected
fix(library/module): sign error is circular module dependency is detected

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

leanprover/lean,eigengrau/lean,avigad/lean,htzh/lean,sp3ctum/lean,javra/lean,levnach/lean,rlewis1988/lean,rlewis1988/lean,rlewis1988/lean,UlrikBuchholtz/lean,fgdorais/lean,leanprover-community/lean,avigad/lean,johoelzl/lean,avigad/lean,johoelzl/lean,fgdorais/lean,levnach/lean,digama0/lean,leanprover-community/lean,fgdorais/lean,digama0/lean,Kha/lean,dselsam/lean,fpvandoorn/lean2,leanprover-community/lean,dselsam/lean,dselsam/lean,eigengrau/lean,Kha/lean,sp3ctum/lean,digama0/lean,johoelzl/lean,fpvandoorn/lean,leanprover/lean,dselsam/lean,avigad/lean,eigengrau/lean,javra/lean,fpvandoorn/lean2,fpvandoorn/lean2,leodemoura/lean,leodemoura/lean,leodemoura/lean,levnach/lean,javra/lean,johoelzl/lean,rlewis1988/lean,leodemoura/lean,leanprover/lean,soonhokong/lean-windows,avigad/lean,soonhokong/lean-windows,fpvandoorn/lean2,soonhokong/lean-windows,UlrikBuchholtz/lean,soonhokong/lean-windows,dselsam/lean,soonhokong/lean,fpvandoorn/lean2,Kha/lean,htzh/lean,levnach/lean,soonhokong/lean-windows,soonhokong/lean,fpvandoorn/lean,soonhokong/lean-osx,c-cube/lean,digama0/lean,leanprover-community/lean,eigengrau/lean,fpvandoorn/lean,Kha/lean,UlrikBuchholtz/lean,htzh/lean,c-cube/lean,avigad/lean,leanprover/lean,eigengrau/lean,levnach/lean,leanprover/lean,soonhokong/lean-osx,fgdorais/lean,digama0/lean,soonhokong/lean,sp3ctum/lean,dselsam/lean,rlewis1988/lean,javra/lean,Kha/lean,htzh/lean,sp3ctum/lean,leanprover-community/lean,fpvandoorn/lean,leodemoura/lean,digama0/lean,UlrikBuchholtz/lean,c-cube/lean,leodemoura/lean,soonhokong/lean,soonhokong/lean-osx,fgdorais/lean,soonhokong/lean,johoelzl/lean,javra/lean,sp3ctum/lean,soonhokong/lean-osx,UlrikBuchholtz/lean,johoelzl/lean,fpvandoorn/lean,c-cube/lean,fgdorais/lean,htzh/lean,soonhokong/lean-osx,c-cube/lean,rlewis1988/lean,leanprover-community/lean,fpvandoorn/lean,Kha/lean,leanprover/lean