Add double quotes in variable

Author: dhsathiya

main.sh

@@ -166,7 +166,7 @@ function setup_wordpress_files() {
 	cd "$HTDOCS"
 	export build_root="$(pwd)"
 
-	hosts_wp_version=$(cat $hosts_file | shyaml get-value "$GITHUB_BRANCH.WP_VERSION" 2> /dev/null)
+	hosts_wp_version=$(cat "$hosts_file" | shyaml get-value "$GITHUB_BRANCH.WP_VERSION" 2> /dev/null)
 
 	# Check if WP_VERSION is already defined in hosts.yml
 	# Priority: 1. hosts.yml, 2. workflow file, else use latest