chore(package): update bn.js to version 4.9.0
chore(package): update bn.js to version 4.9.0

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vogievetsky/node-mysql2,vogievetsky/node-mysql2,sidorares/node-mysql2,sidorares/node-mysql2,vogievetsky/node-mysql2,sidorares/node-mysql2,sidorares/node-mysql2,vogievetsky/node-mysql2