Log Message:
Update www/hiawatha to v11.5

Given a version jump of *two* orders of magnitude, changes are too
many to enumerate.

This package integrates some of the ideas in ktnb@'s wip/hiawatha, in
particular statically linking the included mbedtls.

See the discussion at
<http://mail-index.netbsd.org/tech-pkg/2024/03/23/msg029036.html> --
built-in letsencrypt with its php dependency is an option.

Also: Upstream is not going away, but just changing its domain name.