ci: reduce Node max RAM to 3Go as medium executors have 4Go of RAM
ci: reduce Node max RAM to 3Go as medium executors have 4Go of RAM

Signed-off-by: Gaëtan Maisse <a04e9f418f23bbb031cfe345dbe67344fe1eda60@gmail.com>

storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook,kadirahq/react-storybook,kadirahq/react-storybook