path-util: Reduce transitive includes

src/tmpfiles/offline-passwd.c

@@ -1,10 +1,12 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
+#include "alloc-util.h"
 #include "chase.h"
 #include "fd-util.h"
 #include "log.h"
 #include "offline-passwd.h"
 #include "path-util.h"
+#include "strv.h"
 #include "user-util.h"
 
 DEFINE_PRIVATE_HASH_OPS_WITH_KEY_DESTRUCTOR(uid_gid_hash_ops, char, string_hash_func, string_compare_func, free);