sync: recompute dependencies with aur-graph

This allows to include `provides` in the dependency order.

https://github.com/AladW/aurutils/issues/837#issuecomment-1186543879

lib/aur-sync

@@ -405,11 +405,14 @@ if (( graph )); then
     if ! { while read -r pkg; do
                [[ $pkg ]] && printf '%s\0' "$pkg/.SRCINFO"
            done
-         } | xargs -0 cat -- | aur graph "${graph_args[@]}" >/dev/null
+         } | xargs -0 cat -- | aur graph "${graph_args[@]}" >"$tmp"/graph
     then
         error '%s: failed to verify dependency graph' "$argv0"
         exit 1
     fi < "$tmp"/queue
+
+    # Recompute dependencies to include `provides` (#837)
+    tsort < "$tmp"/graph | tac >"$tmp"/queue
 fi
 
 # Inspect package files