[TASK] Add MAIL/dsn setting to blinded configuration options

$GLOBALS['TYPO3_CONF_VARS']['MAIL']['dsn'] may contain credentials
and is therefore blinded in the configuration module.

Resolves: #96993
Releases: main, 11.5
Change-Id: I9a6ff7cc8f6c58fa3281125d5198bebb452a4ebc
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/74936


Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>

typo3/sysext/lowlevel/Classes/ConfigurationModuleProvider/GlobalVariableProvider.php

@@ -56,6 +56,7 @@ class GlobalVariableProvider extends AbstractProvider
                 'ssl_key' => '******',
             ],
             'MAIL' => [
+                'dsn' => '******',
                 'transport_smtp_encrypt' => '******',
                 'transport_smtp_password' => '******',
                 'transport_smtp_server' => '******',