Bug Report

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• Yes, more specifically, I reviewed the guidelines on how to write clear bug reports.

Describe the current, buggy behaviour

If I run "wp config shuffle-salts" using WP-CLI 2.8.1, the updated wp-config.php file ends up with an extra line feed (i.e. at least two of them) on the end of most lines, giving a "double line spaced" look to the file.

Describe how other contributors can replicate this bug

After running "wp config shuffle-salts", a "hexdump -C wp-config.php | less" shows multiple 0a (line feed) endings and just running "less wp-config.php" shows double line spaced output (even in comment sections).

Let us know what environment you are running this on

OS: Linux 4.18.0-425.13.1.el8_7.x86_64 #1 SMP Tue Feb 21 04:20:52 EST 2023 x86_64
Shell: /bin/bash
PHP binary: /opt/remi/php81/root/usr/bin/php
PHP version: 8.1.21
php.ini used: /etc/opt/remi/php81/php.ini
MySQL binary: /bin/mysql
MySQL version: mysql Ver 15.1 Distrib 10.11.4-MariaDB, for Linux (x86_64) using readline 5.1
SQL modes:
WP-CLI root dir: phar://wp-cli.phar/vendor/wp-cli/wp-cli
WP-CLI vendor dir: phar://wp-cli.phar/vendor
WP_CLI phar path: [redacted]
WP-CLI packages dir:
WP-CLI cache dir: [redacted]
WP-CLI global config:
WP-CLI project config:
WP-CLI version: 2.8.1

Provide a possible solution

Don't add an extra line feed to the end of lines :-)

Provide additional context/Screenshots

This problem is annoying, especially since you have to write a script to remove the additional line feeds.