Python: Bump Python version to 1.22.1 for a release (#10751)

### Motivation and Context

Bump Python version to 1.22.1 for a release

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### Description

Bump Python version to 1.22.1 for a release

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### Contribution Checklist

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- [X] The code builds clean without any errors or warnings
- [X] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [X] All unit tests pass, and I have added new tests where possible
- [X] I didn't break anyone 😄

python/semantic_kernel/__init__.py

@@ -2,8 +2,8 @@
 
 from semantic_kernel.kernel import Kernel
 
-__version__ = "1.22.0"
+__version__ = "1.22.1"
 
-DEFAULT_RC_VERSION = f"{__version__}-rc1"
+DEFAULT_RC_VERSION = f"{__version__}-rc2"
 
 __all__ = ["DEFAULT_RC_VERSION", "Kernel", "__version__"]

python/tests/unit/connectors/ai/hugging_face/test_hf_text_completions.py

@@ -4,7 +4,7 @@
 from unittest.mock import MagicMock, Mock, patch
 
 import pytest
-from transformers import TextIteratorStreamer
+from transformers import AutoTokenizer, TextIteratorStreamer
 
 from semantic_kernel.connectors.ai.hugging_face.services.hf_text_completion import HuggingFaceTextCompletion
 from semantic_kernel.connectors.ai.prompt_execution_settings import PromptExecutionSettings
@@ -135,6 +135,10 @@ async def test_text_completion_streaming(model_name, task, input_str):
             "semantic_kernel.connectors.ai.hugging_face.services.hf_text_completion.Thread",
             side_effect=Mock(spec=Thread),
         ),
+        patch(
+            "semantic_kernel.connectors.ai.hugging_face.services.hf_text_completion.AutoTokenizer",
+            side_effect=Mock(spec=AutoTokenizer),
+        ),
         patch(
             "semantic_kernel.connectors.ai.hugging_face.services.hf_text_completion.TextIteratorStreamer",
             return_value=mock_streamer,