community/xmrig-proxy: upgrade to 6.22.0

Ref https://github.com/xmrig/xmrig-proxy/releases/tag/v6.22.0

community/xmrig-proxy/APKBUILD

 # Contributor: Oleg Titov <oleg.titov@gmail.com>
 # Maintainer: Oleg Titov <oleg.titov@gmail.com>
 pkgname=xmrig-proxy
-pkgver=6.21.1
+pkgver=6.22.0
 pkgrel=0
 pkgdesc="XMRig Proxy is a high performance Monero (XMR) Stratum protocol proxy"
 url="https://xmrig.com/proxy"
@@ -30,5 +30,5 @@ package() {
 }
 
 sha512sums="
-7d1bd18b64393f446a3805ebda23058401e971ee485ac0f1afa44e4679ef5941ddc9fc4578b73f1384de90f28abb18d1beeee0bb55b1a8f1f975cd9741577896  xmrig-proxy-6.21.1.tar.gz
+0050ec1faac22312f177f99c1ed45f29c2d74992acd911f970d3c3caee57cedab755940c37d2e97453b4230bab27197759e85613879d7e91fb804b52e43ca1cc  xmrig-proxy-6.22.0.tar.gz
 "