Update git submodules

* Update openstacksdk from branch 'master'
  to 12f9b903de8804494bb93f772350a9d4a429c8ef
  - Merge "Add secure hash validation for image downloads"
  - Add secure hash validation for image downloads

    Add support for validating image downloads using secure hash algorithms
    (SHA256, SHA512, etc.) via the ``os_hash_algo`` and ``os_hash_value``
    metadata fields. This addresses the limitation of MD5-only validation
    and improves data integrity verification.

    Closes-Bug: #2130662
    Change-Id: I16c0c949c2382274daaf9fd6dad3f0ecad353b9c
    Signed-off-by: Afonne-CID <afonnepaulc@gmail.com>

diff --git a/openstacksdk b/openstacksdk
index 8926bfe8fd21d91b7fdcd54590d36435393c2c4f..12f9b903de8804494bb93f772350a9d4a429c8ef 160000 (submodule)
--- a/openstacksdk
+++ b/openstacksdk
@@ -1 +1 @@
-Subproject commit 8926bfe8fd21d91b7fdcd54590d36435393c2c4f
+Subproject commit 12f9b903de8804494bb93f772350a9d4a429c8ef