Remove usage of deprecated getMongoDB method (#3367)

Author: GromNaN

tests/ConnectionTest.php

@@ -63,7 +63,7 @@ public function testDisconnectAndCreateNewConnection()
     public function testDb()
     {
         $connection = DB::connection('mongodb');
-        $this->assertInstanceOf(Database::class, $connection->getMongoDB());
+        $this->assertInstanceOf(Database::class, $connection->getDatabase());
         $this->assertInstanceOf(Client::class, $connection->getClient());
     }
 
@@ -199,7 +199,7 @@ public function testConnectionConfig(string $expectedUri, string $expectedDataba
         $client     = $connection->getClient();
 
         $this->assertSame($expectedUri, (string) $client);
-        $this->assertSame($expectedDatabaseName, $connection->getMongoDB()->getDatabaseName());
+        $this->assertSame($expectedDatabaseName, $connection->getDatabase()->getDatabaseName());
         $this->assertSame('foo', $connection->getCollection('foo')->getCollectionName());
         $this->assertSame('foo', $connection->table('foo')->raw()->getCollectionName());
     }

tests/FilesystemsTest.php

@@ -56,7 +56,7 @@ public static function provideValidOptions(): Generator
                 'driver' => 'gridfs',
                 'bucket' => static fn (Application $app) => $app['db']
                     ->connection('mongodb')
-                    ->getMongoDB()
+                    ->getDatabase()
                     ->selectGridFSBucket(),
             ],
         ];
@@ -68,7 +68,7 @@ public function testValidOptions(array $options)
         // Service used by "bucket-service"
         $this->app->singleton('bucket', static fn (Application $app) => $app['db']
             ->connection('mongodb')
-            ->getMongoDB()
+            ->getDatabase()
             ->selectGridFSBucket());
 
         $this->app['config']->set('filesystems.disks.' . $this->dataName(), $options);
@@ -145,6 +145,6 @@ public function testPrefix()
 
     private function getBucket(): Bucket
     {
-        return DB::connection('mongodb')->getMongoDB()->selectGridFSBucket();
+        return DB::connection('mongodb')->getDatabase()->selectGridFSBucket();
     }
 }