update go-sql-driver/mysql to v1.5.0#63

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KatamariJr wants to merge 1 commit intonetlify:masterfrom

KatamariJr:update_mysql

Commits on Jun 24, 2021

update go-sql-driver/mysql to v1.5.0, in line with netlify/gotrue, in order to support MySQL 8 default auth settings
KatamariJr
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