spandsp3: add missing libjpeg dependency

pkgs/development/libraries/spandsp/3.nix

···
 {
   fetchFromGitHub,
   callPackage,
+  libjpeg,
 }:
 
 (callPackage ./common.nix { }).overrideAttrs (previousAttrs: {
···
     rev = "6ec23e5a7e411a22d59e5678d12c4d2942c4a4b6"; # upstream does not seem to believe in tags
     sha256 = "03w0s99y3zibi5fnvn8lk92dggfgrr0mz5255745jfbz28b2d5y7";
   };
+
+  propagatedBuildInputs = previousAttrs.propagatedBuildInputs or [] ++ [
+    libjpeg
+  ];
 })