[10.x] Add replace_placeholders to log channels (laravel#6139)

* add replace_placeholders to log channels

* Update logging.php

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Co-authored-by: Taylor Otwell <[email protected]>

Specify facility in the syslog driver config (laravel#6130)

Update CHANGELOG.md

remove unneeded call

Allow php-http/discovery as a composer plugin (laravel#6106)

update min stability

update example

Keeps `"prefer-stable": true`

switch email to a primary key (laravel#6064)

switching from a normal index here to a primary index works the same except for adding a `UNIQUE` constraint.

The `DatabaseTokenRepository` deletes existing records with an email first, before creating a new one, so this additional constraint will be okay.

https://github.com/laravel/framework/blob/9.x/src/Illuminate/Auth/Passwords/DatabaseTokenRepository.php#L88

add decimal translation