harmony/libxml2: version py3-libxml2 provider

harmony/libxml2/APKBUILD

@@ -61,7 +61,7 @@ py() {
 	cd "$builddir"
 
 	pkgdesc="$pkgname Python bindings"
-	provides="py3-libxml2"
+	provides="py3-libxml2=$pkgver-r$pkgrel"
 	install -d "$subpkgdir"/usr/lib
 	mv "$pkgdir"/usr/lib/python3* "$subpkgdir"/usr/lib/
 }