fix GitHub workflow working directories in MinGW builds

fix GitHub workflow working directories in MinGW builds

replace hardcoded directory names with env variable version info
bump pkcs11-helper version to 1.29.0
bump OpenSSL version to 1.1.1n
add OpenSSL version to cache key
use release file for pkcs11-helper archive
use OpenSSL URL endpoint with all/current versions

Signed-off-by: Marc Becker <becm@gmx.de>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220425215822.18569-1-becm@gmx.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24202.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>