imlib2: 1.7.2 -> 1.7.3

pkgs/development/libraries/imlib2/default.nix

···
 in
 stdenv.mkDerivation rec {
   pname = "imlib2";
-  version = "1.7.2";
+  version = "1.7.3";
 
   src = fetchurl {
     url = "mirror://sourceforge/enlightenment/${pname}-${version}.tar.bz2";
-    sha256 = "sha256-Ul1OMYknRxveRSB4bcJVC1mriFM4SNstdcYPW05YIaE=";
+    sha256 = "sha256-FY0LjCC8ESIa+ed6ZKEW/KcFGwPN6ixPMdMfRpOC+Zc=";
   };
 
   buildInputs = [