feat: add SKIP_BREW env var to ./scripts/bootstrap (#3995)

Author: stainless-app[bot]

scripts/bootstrap

@@ -4,7 +4,7 @@ set -e
 
 cd "$(dirname "$0")/.."
 
-if [ -f "Brewfile" ] && [ "$(uname -s)" = "Darwin" ]; then
+if [ -f "Brewfile" ] && [ "$(uname -s)" = "Darwin" ] && [ "$SKIP_BREW" != "1" ]; then
   brew bundle check >/dev/null 2>&1 || {
     echo "==> Installing Homebrew dependencies…"
     brew bundle