Bump to 2.8.6.0

changelog.md

 # Changelog for [`unix` package](http://hackage.haskell.org/package/unix)
 
+## 2.8.6.0 *Nov 2024*
+
+  * add `readDirStreamWith` and `readDirStreamWithPtr` to `System.Posix.Directory.Internals` wrt [#251](https://github.com/haskell/unix/pull/251)
+
 ## 2.8.5.1 *Apr 2024*
 
   * fix building with newer filepath/os-string when `#ifndef HAVE_OPENPTY`

unix.cabal

 cabal-version:  1.12
 name:           unix
-version:        2.8.5.1
+version:        2.8.6.0
 -- NOTE: Don't forget to update ./changelog.md
 
 license:        BSD3