databases/pecl-memcached: Update to latest snapshot (058e9f5)

• Fix PHP 8.0 arginfo
• Bump PORTREVISION for package change

The main corresponding commits for arginfo are [1], [2] and [3].

PR: 257130
Reported by: <townwear@gmail.com>
Reference: https://github.com/php-memcached-dev/php-memcached/commit/e8f53777d3f578586f2a32f1b3bdcc3f53e74b39 [1]

		https://github.com/php-memcached-dev/php-memcached/commit/8f3c5dc0fa773aded5d169e5c5b8eab18c8931c6 [2]
		https://github.com/php-memcached-dev/php-memcached/commit/c8f9376a8b1399907e732064890101da7261d8bb [3]