ci: Run windows ci config on cirrus

ci/test/00_setup_env_win64.sh

@@ -9,7 +9,7 @@ export LC_ALL=C.UTF-8
 export CONTAINER_NAME=ci_win64
 export DOCKER_NAME_TAG=ubuntu:18.04  # Check that bionic can cross-compile to win64 (bionic is used in the gitian build as well)
 export HOST=x86_64-w64-mingw32
-export PACKAGES="python3 nsis g++-mingw-w64-x86-64 wine-binfmt wine64"
+export PACKAGES="python3 nsis g++-mingw-w64-x86-64 wine-binfmt wine64 file"
 export RUN_FUNCTIONAL_TESTS=false
 export RUN_SECURITY_TESTS="true"
 export GOAL="deploy"