testing/docker-cli-compose: upgrade to 2.0.0_rc1

For more info, see https://github.com/docker/compose-cli/releases/tag/v2.0.0-rc.1

testing/docker-cli-compose/APKBUILD

 # Contributor: Jake Buchholz Göktürk <tomalok@gmail.com>
 # Maintainer: Jake Buchholz Göktürk <tomalok@gmail.com>
 pkgname=docker-cli-compose
-pkgver=2.0.0_beta6
-_ver=2.0.0-beta.6
+pkgver=2.0.0_rc1
+_ver=2.0.0-rc.1
 pkgrel=0
 pkgdesc="A Docker CLI plugin for extended build capabilities"
 url="https://docs.docker.com/compose/cli-command"
@@ -39,5 +39,5 @@ package() {
 }
 
 sha512sums="
-2bf39813797ac58f1b29b329ee396ca6c52fb6cafa2a53b60ca6a1275947c3c663903af4a1a7e20339bab2ae76e847f63071d879e8549a51ea68c50ff2dbb0eb  compose-cli-2.0.0-beta.6.tar.gz
+97876307a66909510d1c4b3fde42dbf2c753c447159fbefae5d08781c4fa9808791645dc49950709e36a2bc54cf551eb6f454677ba180c5518677b38d7673e98  compose-cli-2.0.0-rc.1.tar.gz
 "