Newlines in firebase auth:export are not escaped

Environment info

firebase-tools: v9.21.0

Platform: macOS

Test case

Firebase Auth has to be enabled for the issue to appear, but apart from that the issue can be reproduced using the 3 steps below.

Steps to reproduce

Create a new user like this:

admin.auth().createUser({
displayName: 'Foo\nBar'
});

Use the Firebase CLI to export all users to a file:

firebase auth:export ./accounts.csv --format CSV --project old-project

Use the Firebase CLI to import all users from the accounts.csv file:
```
firebase auth:import ./accounts.csv --project=new-project
```

Expected behavior

The exported users from Auth simply import to a different Firebase project using the CLI.

Actual behavior

I am getting the following error: The import fails with an error like this: Error: Line 2 (...) has invalid data format: Password hash should be base64 encoded.

After investigating the data a bit I noticed some interesting data regarding all name fields: A user added via Google Login had a newline (\n) in their "Name" (column 6) and "Google Display Name" (column 10), which resulted in the CSV also including a line break!

So the accounts.csv looked something like this: 123123123,foo.bar@example.com,true,passwordHash==,salt==,Foo Bar,https://example.com/images.png,foo.bar@example.com,Foo Bar,https://example.com/images.png,,,,,,,,,,,,,1111,1111,,false,,

Because of this new line in the name fields, the resulting CSV is incorrect and the importer assumed that the second line was a new entry even though it still was connected to the previous user.

firebase / firebase-tools