lwan: 0.3 -> 0.4

ChangeLog: https://github.com/lpereira/lwan/releases/tag/v0.4

Primary motivation for this is to get it building with glibc-2.34
for #133431.

pkgs/servers/http/lwan/default.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "lwan";
-  version = "0.3";
+  version = "0.4";
 
   src = fetchFromGitHub {
     owner = "lpereira";
     repo = pname;
     rev = "v${version}";
-    sha256 = "1znkcsbxw3r10prqvf2x27w1wmm9kd485pj59c364wlvqdhidwqr";
+    sha256 = "sha256-Z8kiuZHLEupCKFrj8guiu9fTG7s+5KiQ6x0pg9iMy0c=";
   };
 
   nativeBuildInputs = [ cmake pkg-config ];