doc: add KeyObject to type for crypto.createDecipheriv() argument

PR-URL: #29689
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/crypto.md

@@ -1736,7 +1736,7 @@ changes:
 -->
 
 * `algorithm` {string}
-* `key` {string | Buffer | TypedArray | DataView}
+* `key` {string | Buffer | TypedArray | DataView | KeyObject}
 * `iv` {string | Buffer | TypedArray | DataView | null}
 * `options` {Object} [`stream.transform` options][]
 * Returns: {Decipher}