Use empty home variable for homebrew installation

Homebrew install script does not respect HOMEBREW_CACHE variable. Using an empty home variable ensures we get the result we want, but it is hacky.

modules/04-install-brew.sh

@@ -207,9 +207,8 @@ function createBrewPeriodicScript() {
 }
 
 function installHomebrewCore() {
-	export NONINTERACTIVE=1
 	[ ! -d $(getHomebrewRepositoryPath) ] || return
-	sudo --preserve-env=NONINTERACTIVE -u "${homebrew_username}" /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+	NONINTERACTIVE=1 HOME= sudo --preserve-env=NONINTERACTIVE,HOME -u "${homebrew_username}" /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
 	[ -d $(getHomebrewRepositoryPath) ]
 }