I have tried to upgrade using "composer require-commerce magento/magento-cloud-metapackage:'2.4.5-p2 < 2.4.6' --no-update" this composer command but it's returning the error like
Please help me out if anyone have done this before.
I suspect it's just that it goes to search the wrong version name. What if you edit directly your composer.json magento/magento-cloud-metapackage : 2.4.5-p2 and replace it by magento/magento-cloud-metapackage : 2.4.6
Then run COMPOSER_MEMORY_LIMIT=-1 composer update
please run commands like :-
composer require-commerce magento/magento-cloud-metapackage:">=2.4.5 <2.4.6" --no-update