please.sh create-sdk-artifacts: fix 32-bit osslsigncode

With the recent slimming of the installer, we no longer included
`libffi-7.dll`, but `osslsigncode.exe` requires it.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

please.sh

@@ -4415,6 +4415,7 @@ create_sdk_artifact () { # [--out=<directory>] [--git-sdk=<directory>] [--bitnes
 			/mingw32/bin/libxml2-[0-9]*.dll
 			/mingw32/bin/libgmodule-[0-9]*.dll
 			/mingw32/bin/libzstd*.dll
+			/mingw32/bin/libffi-[0-9]*.dll
 			EOF
 			;;
 		*)