[skip ci] Add property hooks entry to NEWS

Author: iluuu1994

NEWS

@@ -55,6 +55,7 @@ PHP                                                                        NEWS
   . Added the #[\Deprecated] attribute. (beberlei, timwolla)
   . Fixed GH-11389 (Allow suspending fibers in destructors). (Arnaud, trowski)
   . Fixed bug GH-14801 (Fix build for armv7). (andypost)
+  . Implemented property hooks RFC. (ilutov)
 
 - Curl:
   . Deprecated the CURLOPT_BINARYTRANSFER constant. (divinity76)