forgejo,forgejo-lts: fix passthru.updateScript

`nix-update` is unable to detect that the hashes are in `packages.nix`
and `lts.nix` instead of `generic.nix` (where the `.src` attribute lies)
respectively.

`nix-update` provides a `--override-filename` flag to override that
heuristic, so we use that.

Additionally, scope `lts.nix` to the 7.x version series by using
`--version-regex`.

pkgs/by-name/fo/forgejo/generic.nix

@@ -3,6 +3,7 @@
 , hash
 , npmDepsHash
 , vendorHash
+, nixUpdateExtraArgs ? [ ]
 }:
 
 { bash
@@ -154,7 +155,7 @@ buildGoModule rec {
     '';
 
     tests = if lts then nixosTests.forgejo-lts else nixosTests.forgejo;
-    updateScript = nix-update-script { };
+    updateScript = nix-update-script { extraArgs = nixUpdateExtraArgs; };
   };
 
   meta = {

pkgs/by-name/fo/forgejo/lts.nix

@@ -4,4 +4,10 @@ import ./generic.nix {
   npmDepsHash = "sha256-OqtYRjftwGxgW1JgMxyWd+9DndpEkd3LdQHSECc40yU=";
   vendorHash = "sha256-hfbNyCQMQzDzJxFc2MPAR4+v/qNcnORiQNbwbbIA4Nw=";
   lts = true;
+  nixUpdateExtraArgs = [
+    "--version-regex"
+    "v(7\.[0-9.]+)"
+    "--override-filename"
+    "pkgs/by-name/fo/forgejo/lts.nix"
+  ];
 }

pkgs/by-name/fo/forgejo/package.nix

@@ -4,4 +4,8 @@ import ./generic.nix {
   npmDepsHash = "sha256-6AMaZadgcTvOBsIXJjZQB6Q1rkdn+R82pclXdVvtdWY=";
   vendorHash = "sha256-tNb0tCf+gjUmUqrjkzt7Wqqz21hW9WRh8CEdX8rv8Do=";
   lts = false;
+  nixUpdateExtraArgs = [
+    "--override-filename"
+    "pkgs/by-name/fo/forgejo/package.nix"
+  ];
 }