Fixed brew formulae list error

Resolves the following from happening:

    Error: Calling `brew list` to only list formulae is disabled! Use
    `brew list --formula` instead.

Includes a correction for the plural form for `casks` as well.

lib/verifiers.sh

@@ -6,7 +6,7 @@
 verify_homebrew_formulas() {
   printf "Checking Homebrew formulas...\n"
 
-  local applications="$(brew list)"
+  local applications="$(brew list --formulae)"
 
   while read line; do
     if [[ "$line" == "brew install"* ]]; then
@@ -29,7 +29,7 @@ export -f verify_homebrew_formulas
 verify_homebrew_casks() {
   printf "\nChecking Homebrew casks...\n"
 
-  local applications="$(brew list --cask)"
+  local applications="$(brew list --casks)"
 
   while read line; do
     if [[ "$line" == "brew cask install"* ]]; then