ocaml-stdio: update to 0.16.0

This MR updates this package to the 0.16.0. I've tried building several packages in the AUR that depend on this and everything seems to be working as it should.

PKGBUILD

@@ -5,8 +5,8 @@
 
 _projectname='stdio'
 pkgname="ocaml-$_projectname"
-pkgver=0.15.0
-pkgrel=5
+pkgver=0.16.0
+pkgrel=1
 pkgdesc='Standard IO Library for OCaml'
 arch=('x86_64')
 url="https://github.com/janestreet/$_projectname"
@@ -15,7 +15,7 @@ depends=('glibc' 'ocaml' 'ocaml-base')
 makedepends=('dune')
 options=('!strip')
 source=("$pkgname-$pkgver-$pkgrel.tar.gz::$url/archive/v$pkgver.tar.gz")
-sha256sums=('49f2478fc08677a54bffaeb2b017d23ece19ab5c1d6c993513a20b34aeee81a7')
+sha256sums=('388561b483894ae27b5968358b7978ae6a242f426e8c26fd92b39852d68b856e')
 
 _sourcedirectory="$_projectname-$pkgver"