Astera Labs Inc. plans to raise as much as $534 million in an initial public offering as the Intel Corp.-backed semiconductor connectivity company seeks to tap investor demand for artificial intelligence plays.Astera is selling 14.79 million shares, while existing investors are offering another 3.01 million, the Santa Clara, California-based company said Friday in a regulatory filingBloomberg Terminal. The stock is being offered at $27 to $30 a share, the filing shows....