Locally when I run `composer install` it doesn't show anything about suggestions. In our CI environment it provides a long list of suggestions I'd like to avoid. I want to see the output of what's being loaded from cache and that kind of thing, just don't want to see this. I've been through the docs and haven't been able to figure out how to hide this.

The suggestions are (among many others)...

```
symfony/security-core suggests installing symfony/expression-language (For using the expression voter)
symfony/routing suggests installing symfony/expression-language (For using expression matching)
predis/predis suggests installing ext-phpiredis (Allows faster serialization and deserialization of the Redis protocol)
phpseclib/phpseclib suggests installing ext-gmp (Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.)
phpseclib/phpseclib suggests installing pear-pear/PHP_Compat (Install PHP_Compat to get phpseclib working on PHP < 4.3.3.)
patchwork/utf8 suggests installing ext-intl (Use Intl for best performance)
monolog/monolog suggests installing aws/aws-sdk-php (Allow sending log messages to AWS services like DynamoDB)

```

How can I hide this output?