[12.x] Replace logger helper and log function concrete return type ?LogManager with abstract ?LoggerInterface

src/Illuminate/Foundation/helpers.php

@@ -560,9 +560,9 @@ function lang_path($path = ''): string
      * Log a debug message to the logs.
      *
      * @param  string|null  $message
-     * @return ($message is null ? \Illuminate\Log\LogManager : null)
+     * @return ($message is null ? \Psr\Log\LoggerInterface : null)
      */
-    function logger($message = null, array $context = []): ?LogManager
+    function logger($message = null, array $context = []): ?LoggerInterface
     {
         if (is_null($message)) {
             return app('log');

src/Illuminate/Log/functions.php

@@ -2,15 +2,17 @@
 
 namespace Illuminate\Log;
 
+use Psr\Log\LoggerInterface;
+
 if (! function_exists('Illuminate\Log\log')) {
     /**
      * Log a debug message to the logs.
      *
      * @param  string|null  $message
      * @param  array  $context
-     * @return ($message is null ? \Illuminate\Log\LogManager : null)
+     * @return ($message is null ? \Psr\Log\LoggerInterface: null)
      */
-    function log($message = null, array $context = []): ?LogManager
+    function log($message = null, array $context = []): ?LoggerInterface
     {
         return logger($message, $context);
     }

types/Foundation/Helpers.php

@@ -29,7 +29,7 @@
 assertType('Illuminate\Foundation\Bus\PendingDispatch', dispatch('foo'));
 assertType('Illuminate\Foundation\Bus\PendingClosureDispatch', dispatch(fn () => 1));
 
-assertType('Illuminate\Log\LogManager', logger());
+assertType('Psr\Log\LoggerInterface', logger());
 assertType('null', logger('foo'));
 
 assertType('Illuminate\Log\LogManager', logs());