Fix S3WithHmac source-type allowed values for 2025-12-01 API

Update source_type enum to match 2025-12-01 API spec:
- Added: ALIBABA, DELL_EMC, OTHER
- Removed: BACKBLAZE, CLOUDFLARE
- Updated test to use MINIO instead of removed BACKBLAZE
- Updated HISTORY.rst changelog

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Suyash Choudhary

src/storage-mover/HISTORY.rst

@@ -9,6 +9,7 @@ Release History
 * Added `connection` resource commands (create, delete, list, show, update, wait).
 * Added S3-compatible storage endpoint type (`create-for-s3-with-hmac`, `update-for-s3-with-hmac`).
 * Added `schedule`, `connections`, `preserve-permissions`, and `data-integrity-validation` parameters to job definition commands.
+* Fixed allowed values for S3WithHmac `source-type` parameter to match 2025-12-01 API spec: added `ALIBABA`, `DELL_EMC`, `OTHER` and removed deprecated `BACKBLAZE`, `CLOUDFLARE`.
 
 1.2.1
 +++++

src/storage-mover/azext_storage_mover/_params.py

@@ -68,7 +68,7 @@ def load_arguments(self, _):  # pylint: disable=unused-argument
 
     with self.argument_context('storage-mover endpoint create-for-s3-with-hmac') as c:
         c.argument('source_uri', help='The URI which points to the S3-compatible source.')
-        c.argument('source_type', arg_type=get_enum_type(['BACKBLAZE', 'CLOUDFLARE', 'GCS', 'IBM', 'MINIO']),
+        c.argument('source_type', arg_type=get_enum_type(['ALIBABA', 'DELL_EMC', 'GCS', 'IBM', 'MINIO', 'OTHER']),
                    help='The source type of the S3WithHmac endpoint.')
         c.argument('other_source_type_description',
                    help='The description for other source type of S3WithHmac endpoint.')