chore(deps): update dependency mysql2 to v3.6.3 #862

Job	Run time
SQLite (Node 10, Sequelize 5)	6m 55s
SQLite (Node 10, Sequelize latest)	6m 1s
Postgres (Node 10, Sequelize 5)	8m 54s
MySQL (Node 10, Sequelize 5)	1m 15s
SQLite (Node 16, Sequelize 5)	6m 42s
Postgres (Node 10, Sequelize latest)	6m 42s
MySQL (Node 10, Sequelize latest)	1m 18s
SQLite (Node 16, Sequelize latest)	6m 38s
Postgres (Node 16, Sequelize 5)	7m 6s
MySQL (Node 16, Sequelize 5)	7m 30s
Postgres (Node 16, Sequelize latest)	7m 42s
MySQL (Node 16, Sequelize latest)	6m 26s
Release	0s
	1h 13m 9s

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