amend! Add schannel to curl installation

vcbuild: stop hard-coding OpenSSL as a dependency

Git for Windows' default SSL backend is actually Secure Channel. Let's
not hard-code any backend, just ask for _any_ SSL backend.

This is necessary because we cannot ask for `schannel`, as
microsoft/vcpkg#46459 removed the option to
specify that as a feature.

Signed-off-by: Dennis Ameling <dennis@dennisameling.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

compat/vcbuild/vcpkg_install.bat

@@ -127,5 +127,5 @@ set features=
 goto :EOF
 
 :curl_features
-set features=[core,openssl,schannel]
+set features=[core,ssl]
 goto :EOF