Julia: update libuv version

pkgs/development/compilers/julia/default.nix

···
     sha256 = "03kaqbjbi6viz0n33dk5jlf6ayxqlsq4804n7kwkndiga9s4hd42";
   };
 
-  libuvVersion = "28f5f06b5ff6f010d666ec26552e0badaca5cdcd";
+  libuvVersion = "9ab431a88fe255dd21e19a11f7fa2dd95774abf4";
   libuv = fetchurl {
     url = "https://api.github.com/repos/JuliaLang/libuv/tarball/${libuvVersion}";
-    sha256 = "1ksns0aiayxmxffvq2kc96904mxlmbkfc30xxck69xnidr2jvr4a";
+    sha256 = "1bh973lbrzrjk7pcjbjnh4n92qldi81ql3aqsclywn2yg07a36h5";
   };
 
   rmathVersion = "0.1";