Hong Kong biotech company Prenetics is going public through a merger with Artisan Acquisition — a special purpose acquisition company, or SPAC — in a deal that will value the combined entity at $1.7 billion. Roy Liu | Bloomberg | Getty Images Hong Kong biotech company Prenetics is going public through a merger with Artisan Acquisition — a special purpose acquisition company, or SPAC — in a deal that will value the combined entity at $1.7 billion, the companies announced Thursday. Confirming CNBC’s earlier report, the two companies said the transaction is expected to close as early as the fourth…