upgrade mysql driver

vendor/github.com/go-sql-driver/mysql/AUTHORS

@@ -13,11 +13,15 @@
 
 Aaron Hopkins <go-sql-driver at die.net>
 Achille Roussel <achille.roussel at gmail.com>
+Alex Snast <alexsn at fb.com>
 Alexey Palazhchenko <alexey.palazhchenko at gmail.com>
 Andrew Reid <andrew.reid at tixtrack.com>
+Animesh Ray <mail.rayanimesh at gmail.com>
 Arne Hormann <arnehormann at gmail.com>
+Ariel Mashraki <ariel at mashraki.co.il>
 Asta Xie <xiemengjun at gmail.com>
 Bulat Gaifullin <gaifullinbf at gmail.com>
+Caine Jette <jette at alum.mit.edu>
 Carlos Nieto <jose.carlos at menteslibres.net>
 Chris Moos <chris at tech9computers.com>
 Craig Wilson <craiggwilson at gmail.com>
@@ -52,6 +56,7 @@ Julien Schmidt <go-sql-driver at julienschmidt.com>
 Justin Li <jli at j-li.net>
 Justin Nuß <nuss.justin at gmail.com>
 Kamil Dziedzic <kamil at klecza.pl>
+Kei Kamikawa <x00.x7f.x86 at gmail.com>
 Kevin Malachowski <kevin at chowski.com>
 Kieron Woodhouse <kieron.woodhouse at infosum.com>
 Lennart Rudolph <lrudolph at hmc.edu>
@@ -74,20 +79,26 @@ Reed Allman <rdallman10 at gmail.com>
 Richard Wilkes <wilkes at me.com>
 Robert Russell <robert at rrbrussell.com>
 Runrioter Wung <runrioter at gmail.com>
+Sho Iizuka <sho.i518 at gmail.com>
+Sho Ikeda <suicaicoca at gmail.com>
 Shuode Li <elemount at qq.com>
 Simon J Mudd <sjmudd at pobox.com>
 Soroush Pour <me at soroushjp.com>
 Stan Putrya <root.vagner at gmail.com>
 Stanley Gunawan <gunawan.stanley at gmail.com>
 Steven Hartland <steven.hartland at multiplay.co.uk>
+Tan Jinhua <312841925 at qq.com>
 Thomas Wodarek <wodarekwebpage at gmail.com>
 Tim Ruffles <timruffles at gmail.com>
 Tom Jenkinson <tom at tjenkinson.me>
 Vladimir Kovpak <cn007b at gmail.com>
+Vladyslav Zhelezniak <zhvladi at gmail.com>
 Xiangyu Hu <xiangyu.hu at outlook.com>
 Xiaobing Jiang <s7v7nislands at gmail.com>
 Xiuming Chen <cc at cxm.cc>
+Xuehong Chan <chanxuehong at gmail.com>
 Zhenye Xie <xiezhenye at gmail.com>
+Zhixin Wen <john.wenzhixin at gmail.com>
 
 # Organizations
 
@@ -103,3 +114,4 @@ Multiplay Ltd.
 Percona LLC
 Pivotal Inc.
 Stripe Inc.
+Zendesk Inc.