fix(azure): API Version should be specified by clients

[Xuanwo]

No description provided.

[sunng87]

hey @Xuanwo , this breaks opendal azure backend:

443 |         let batch_signer = AzureStorageSigner::new().omit_service_version();
    |                                                      ^^^^^^^^^^^^^^^^^^^^ method not found in `AzureStorageSigner`

You might want to release this in a minor version bump

[Xuanwo]

Oh, you are right.

[Xuanwo]

I will yank this version first.