Various code cleanup

app/Transformers/V2/BillTransformer.php

@@ -175,7 +175,10 @@ class BillTransformer extends AbstractTransformer
                     'native_amount'                   => $this->converter->convert($currencies[$currencyId], $this->default, $journal->date, $transaction['amount']),
                     'foreign_native_amount'           => '' === (string)$transaction['foreign_amount'] ? null : $this->converter->convert(
                         $currencies[$foreignCurrencyId],
-                        $this->default, $journal->date, $transaction['foreign_amount']),
+                        $this->default,
+                        $journal->date,
+                        $transaction['foreign_amount']
+                    ),
                 ];
             }
         }

app/Transformers/V2/UserGroupTransformer.php

@@ -1,4 +1,6 @@
 <?php
+
+
 /*
  * UserGroupTransformer.php
  * Copyright (c) 2023 james@firefly-iii.org
@@ -19,6 +21,8 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+declare(strict_types=1);
+
 namespace FireflyIII\Transformers\V2;
 
 use FireflyIII\Enums\UserRoleEnum;