Include pkgrel in the local source filename

Artifact rebuilds (e.g. dependency bundling) change the file behind
<pkg>-<ver>.tar.zst while keeping its name, so users with the previous
file in their AUR helper cache hit a checksum mismatch. Naming the local
download <pkg>-<ver>-<rel>.tar.zst makes every rebuild a fresh file.

wiiudownloader-bin/PKGBUILD

@@ -13,7 +13,7 @@ depends=('glibc' 'glib2' 'hicolor-icon-theme' 'libx11' 'gtk3' 'gdk-pixbuf2'
          'cairo' 'pango' 'fontconfig')
 provides=('wiiudownloader')
 conflicts=('wiiudownloader')
-source=("https://github.com/Felitendo/PKGBUILDS/releases/download/${pkgname}-${pkgver}/${pkgname}-${pkgver}.tar.zst")
+source=("${pkgname}-${pkgver}-${pkgrel}.tar.zst::https://github.com/Felitendo/PKGBUILDS/releases/download/${pkgname}-${pkgver}/${pkgname}-${pkgver}.tar.zst")
 sha256sums=('5b2bd57e6531aee1774ca3b9acc70bc402eab585a2532a666f4484584412622e')
 
 package() {