build: Use tildes in Debian package versioning
build: Use tildes in Debian package versioning

Makes their version sorting closer to the semver we expect.

lkwg82/syncthing,AudriusButkevicius/syncthing,syncthing/syncthing,AudriusButkevicius/syncthing,imsodin/syncthing,lkwg82/syncthing,imsodin/syncthing,jryans/syncthing,lkwg82/syncthing,wweich/syncthing,le9i0nx/syncthing,nrm21/syncthing,imsodin/syncthing,le9i0nx/syncthing,rumpelsepp/syncthing,nrm21/syncthing,AudriusButkevicius/syncthing,jryans/syncthing,uok/syncthing,xduugu/syncthing,wweich/syncthing,lkwg82/syncthing,xduugu/syncthing,xduugu/syncthing,syncthing/syncthing,rumpelsepp/syncthing,uok/syncthing,le9i0nx/syncthing,imsodin/syncthing,AudriusButkevicius/syncthing,nrm21/syncthing,syncthing/syncthing,uok/syncthing,nrm21/syncthing,jryans/syncthing,le9i0nx/syncthing,jryans/syncthing,rumpelsepp/syncthing,wweich/syncthing,wweich/syncthing,xduugu/syncthing,syncthing/syncthing,rumpelsepp/syncthing,syncthing/syncthing,syncthing/syncthing,imsodin/syncthing,uok/syncthing