calibre: add update script

pkgs/by-name/ca/calibre/package.nix

@@ -17,6 +17,7 @@
   libuchardet,
   libusb1,
   libwebp,
+  nix-update-script,
   optipng,
   piper-tts,
   pkg-config,
@@ -228,6 +229,10 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstallCheck
   '';
 
+  passthru.updateScript = nix-update-script {
+    extraArgs = [ "--url=https://github.com/kovidgoyal/calibre" ];
+  };
+
   meta = {
     homepage = "https://calibre-ebook.com";
     description = "Comprehensive e-book software";