Update version to apha for testing period (#1148)

Co-authored-by: Jaap Marcus <me@eris.nu>

src/deb/nginx/control

@@ -1,7 +1,7 @@
 Source: hestia-nginx
 Package: hestia-nginx
 Priority: optional
-Version: 1.19.1
+Version: 1.19.1~alpha
 Section: admin
 Maintainer: HestiaCP <info@hestiacp.com>
 Homepage: https://www.hestiacp.com

src/deb/php/control

@@ -1,7 +1,7 @@
 Source: hestia-php
 Package: hestia-php
 Priority: optional
-Version: 7.4.8
+Version: 7.4.8~alpha
 Section: admin
 Maintainer: HestaCP <info@hestiacp.com>
 Homepage: https://www.hestiacp.com