Upgrade PHP requirement: 8.0 → 8.1, code adjustments#442

enmaboya wants to merge 4 commits intoKyon147:masterKyon147/laravel-shopify:masterfrom

enmaboya:chore/bump-php-min-8.1enmaboya/laravel-shopify:chore/bump-php-min-8.1Copy head branch name to clipboard