Colorize the unpermitted params log message

[trvsdnn]

Summary

This small change simply colorizes the unpermitted params warning/error log output to make it easier for scanning and identifying issues with strong params. I've been helping out some junior/beginner engineers with rails and more than a few times they've run into issues where they're just overlooking the log message. Not ashamed to say that this still gets me every once in a while, mostly because I feel like I've scanned the log and I don't see the message, so I go looking elsewhere.

It seems like moving the default to :raise instead of :log is probably a good idea, but regardless if we'd raise an error, it seems like colorizing the log message makes sense as a parallel.

[gmcgibbon]

We don't seem to colorize much in this log subscriber, but we do a lot in ActiveStorage and ActiveRecord, so why not this one?

[cjolly]

I think this is a step in the right direction! It's silly for newbies (and grizzled vets, for that matter) to fight with this behavior that is a predominantly production security concern while developing an app locally. I've updated my raise by default PR #32206, hopefully it makes it into 6, too.