Fix: only set aws tokens if a key is specified

laravel/framework#53633 fixes laravel side here but it won't be patched into older versions

Author: robchett

src/BrefServiceProvider.php

@@ -162,7 +162,7 @@ private function fixAwsCredentialsConfig(): void
                 continue;
             }
             // If a different key is in the config than in the environment variables
-            if (isset($connection['key']) && $connection['key'] !== $accessKeyId) {
+            if (!isset($connection['key']) || $connection['key'] !== $accessKeyId) {
                 continue;
             }
 
@@ -175,7 +175,7 @@ private function fixAwsCredentialsConfig(): void
                 continue;
             }
             // If a different key is in the config than in the environment variables
-            if (isset($disk['key']) && $disk['key'] !== $accessKeyId) {
+            if (!isset($disk['key']) || $disk['key'] !== $accessKeyId) {
                 continue;
             }
 
@@ -188,7 +188,7 @@ private function fixAwsCredentialsConfig(): void
                 continue;
             }
             // If a different key is in the config than in the environment variables
-            if (isset($store['key']) && $store['key'] !== $accessKeyId) {
+            if (!isset($store['key']) || $store['key'] !== $accessKeyId) {
                 continue;
             }