perl-Test-Pod: 1.48 -> 1.51

pkgs/top-level/perl-packages.nix

···
     propagatedBuildInputs = [ PerlCritic ];
   };
 
-  TestPod = buildPerlPackage {
-    name = "Test-Pod-1.48";
+  TestPod = buildPerlPackage rec {
+    name = "Test-Pod-1.51";
     src = fetchurl {
-      url = mirror://cpan/authors/id/D/DW/DWHEELER/Test-Pod-1.48.tar.gz;
-      sha256 = "1hmwwhabyng4jrnll926b4ab73r40w3pfchlrvs0yx6kh6kwwy14";
+      url = "mirror://cpan/authors/id/E/ET/ETHER/${name}.tar.gz";
+      sha256 = "1yvy5mc4j3s2h4aizryvark2nm58g2c6zhw9mlx9wmsavz7d78f1";
     };
     meta = {
       homepage = http://search.cpan.org/dist/Test-Pod/;