fix windows deployment

Author: Stephan Dilly

Makefile

@@ -27,7 +27,7 @@ release-mac: build-release
 release-win: build-release
 	mkdir -p release
 	tar -C ./target/release/ -czvf ./release/gitui-win.tar.gz ./gitui.exe
-	cargo install cargo-wix
+	cargo install cargo-wix --version 0.3.1
 	cargo wix --no-build --nocapture --output ./release/gitui.msi
 	ls -l ./release/gitui.msi