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.

gearlever-bin/PKGBUILD

@@ -16,7 +16,7 @@ optdepends=('dwarfs: extract AppImages that use a DwarFS filesystem'
             'libxml2-legacy: required by the LibreOffice AppImage')
 provides=('gearlever')
 conflicts=('gearlever')
-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=('225dd08d1fbdf33bb5979660737cee180f60b8cfa6477f1553025a6c2f5236a5')
 
 package() {