iana-etc: fix hash

Without the change the hash fails as:

$ nix build --no-link -f. iana-etc
error: hash mismatch in fixed-output derivation '/nix/store/i1i9gb7cprgxy0rd7x0wr7cwg2v4aly5-source.drv':
specified: sha256-hsmXaMilyDG+JlDvvT8qfgcgk4dVBLil8j4cJzxdkak=
got: sha256-p+VTQMtuhMu64bPK86dRMA7qpk8PtlgI+/vAuiyljXw=
error: 1 dependencies of derivation '/nix/store/778081bbjkbkcsik8gz3k8wzvw0rx2b9-iana-etc-20250505.drv' failed to build

pkgs/by-name/ia/iana-etc/package.nix

···
 
   src = fetchzip {
     url = "https://github.com/Mic92/iana-etc/releases/download/${version}/iana-etc-${version}.tar.gz";
-    sha256 = "sha256-hsmXaMilyDG+JlDvvT8qfgcgk4dVBLil8j4cJzxdkak=";
+    sha256 = "sha256-p+VTQMtuhMu64bPK86dRMA7qpk8PtlgI+/vAuiyljXw=";
   };
 
   installPhase = ''