Also install hex as root user

src/freedombone-app-pleroma

@@ -1175,6 +1175,7 @@ function install_pleroma {
         echo $'mix local.hex failed'
         exit 1745673
     fi
+    mix local.hex --force
     if ! sudo -u pleroma mix deps.get --force; then
         echo $'mix deps.get failed'
         exit 7325733