www/darkhttpd: Update to 1.14 (Fixes CVE-2020-25691)

ChangeLog: https://github.com/emikulic/darkhttpd/releases/tag/v1.14

• Add support for logging with syslog.
• Fix hung connection from consecutive keep-alive requests.
• Fix high CPU usage when timeout is disabled.
• Add --forward-https.
• Make header parsing case insensitive, to work behind an HTTP2 reverse proxy.
• Add trailing slash to links for directories.
• Fix crash when a file has a large (year 10,000+) mtime.

A flaw was found in darkhttpd. Invalid error handling allows remote attackers
to cause denial-of-service by accessing a file with a large modification date.
The highest threat from this vulnerability is to system availability.

PR: 267507
Reported by: henrichhartzer@tuta.io
MFH: 2022Q4 (security update)
Security: CVE-2020-25691

(cherry picked from commit 1de880e0f6277e22d81d68cba532656dc58b207a)