Update PHP Codesniffer (PHPCS), WordPress Coding Standards (WPCS), PHP Compatibility (WIMG)
Copy below individual or all command(s) to get latest update.
composer global require squizlabs/php_codesniffer composer global require wp-coding-standards/wpcs composer global require phpcompatibility/php-compatibility composer global require dealerdirect/phpcodesniffer-composer-installer phpcbf phpcs
Update: 26 – March 2019
Getting notice Package wimg/php-compatibility is abandoned, you should avoid using it. Use phpcompatibility/php-compatibility instead.
while updating the plugin.
E.g.

To fix this issue:
Used composer global require phpcompatibility/php-compatibility
Instead of composer global require wimg/php-compatibility
E.g.
λ composer global require phpcompatibility/php-compatibility Changed current directory to C:/Users/MaheshW/AppData/Roaming/Composer Using version ^9.1 for phpcompatibility/php-compatibility ./composer.json has been updated Loading composer repositories with package information Updating dependencies (including require-dev) Package operations: 1 install, 0 updates, 0 removals - Installing phpcompatibility/php-compatibility (9.1.1): Downloading (100%) phpcompatibility/php-compatibility suggests installing roave/security-advisories (dev-master || Helps prevent installing dependencies with known security issues.) Package wimg/php-compatibility is abandoned, you should avoid using it. Use phpcompatibility/php-compatibility instead.