chore(main): release 0.238.0 (#7124)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

VERSION

@@ -1 +1 @@
-1.39.1
+1.40.0

src/StorageClient.php

@@ -47,7 +47,7 @@ class StorageClient
     use ArrayTrait;
     use ClientTrait;
 
-    const VERSION = '1.39.1';
+    const VERSION = '1.40.0';
 
     const FULL_CONTROL_SCOPE = 'https://www.googleapis.com/auth/devstorage.full_control';
     const READ_ONLY_SCOPE = 'https://www.googleapis.com/auth/devstorage.read_only';