security/pecl-ssh2: Update to 1.1.1

Changelog:

• Version 1.1.1 is same as 1.1 except this release contains this changelog
• Fixed bug #72988 (Libor M.)
• Fixed bug #73198 (Langemeijer)
• Fixed php_url_parse issue (Remi Collet)
• fix Invalid write of size 1 (Remi Collet)
• Fixed bug #73819 (Mitch Hagstrand)
• Fixed bug #73410 (Mitch Hagstrand)
• Travis CI (Mitch Hagstrand)
• Various other fixes on PHP 7 code and code cleanup (Mitch Hagstrand, Libor M., Anatol Belski)

Approved by: garga (mentor)
Differential Revision: https://reviews.freebsd.org/D11375