[openssl/web] f16ed1: Add better dependencies for generated files

[Richard Levitte]

  Branch: refs/heads/master
  Home:   https://github.openssl.org/openssl/web
  Commit: f16ed1e69f3808c79b223a4117bb340619559a7b
      https://github.openssl.org/openssl/web/commit/f16ed1e69f3808c79b223a4117bb340619559a7b
  Author: Richard Levitte <levitte at openssl.org>
  Date:   2022-05-06 (Fri, 06 May 2022)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Add better dependencies for generated files

Most of all, `Makefile` is added as a dependency, because we sometimes
make changes there that should affect re-generation.  The recent change
of how `community/otc.inc` is generated is the perfect example.

Reviewed-by: Matt Caswell <matt at openssl.org>
(Merged from https://github.com/openssl/web/pull/330)