Python: Bump Python version to 1.16.0 for a release. (#9781)

### Motivation and Context

Bump Python version to 1.16.0 for a release.

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### Description

Bump Python version to 1.16.0 for a release. Includes feature work to
promote OpenAPI plugin to preview from experimental.

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [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 😄

---------

Co-authored-by: Tao Chen <taochen@microsoft.com>

python/pyproject.toml

@@ -25,7 +25,7 @@ classifiers = [
 dependencies = [
     "aiohttp ~= 3.8",
     "cloudevents ~=1.0",
-    "pydantic ~= 2.0",
+    "pydantic ~= 2.0<2.10",
     "pydantic-settings ~= 2.0",
     "defusedxml ~= 0.7",
     # azure identity

python/semantic_kernel/__init__.py

@@ -2,5 +2,5 @@
 
 from semantic_kernel.kernel import Kernel
 
-__version__ = "1.15.0"
+__version__ = "1.16.0"
 __all__ = ["Kernel", "__version__"]

python/semantic_kernel/agents/open_ai/open_ai_assistant_base.py

@@ -80,12 +80,12 @@ class OpenAIAssistantBase(Agent):
     enable_code_interpreter: bool | None = Field(False)
     enable_file_search: bool | None = Field(False)
     enable_json_response: bool | None = Field(False)
-    code_interpreter_file_ids: list[str] | None = Field(default_factory=list, max_length=20)
-    file_search_file_ids: list[str] | None = Field(default_factory=list, max_length=20)
+    code_interpreter_file_ids: list[str] | None = Field(default_factory=list, max_length=20)  # type: ignore
+    file_search_file_ids: list[str] | None = Field(default_factory=list, max_length=20)  # type: ignore
     temperature: float | None = Field(None)
     top_p: float | None = Field(None)
     vector_store_id: str | None = None
-    metadata: dict[str, Any] | None = Field(default_factory=dict, max_length=16)
+    metadata: dict[str, Any] | None = Field(default_factory=dict, max_length=16)  # type: ignore
     max_completion_tokens: int | None = Field(None)
     max_prompt_tokens: int | None = Field(None)
     parallel_tool_calls_enabled: bool | None = Field(True)

python/semantic_kernel/contents/streaming_annotation_content.py

@@ -20,8 +20,9 @@ class StreamingAnnotationContent(KernelContent):
     """Streaming Annotation content."""
 
     content_type: Literal[ContentTypes.STREAMING_ANNOTATION_CONTENT] = Field(
-        STREAMING_ANNOTATION_CONTENT_TAG, init=False
-    )  # type: ignore
+        STREAMING_ANNOTATION_CONTENT_TAG,  # type: ignore
+        init=False,
+    )
     tag: ClassVar[str] = STREAMING_ANNOTATION_CONTENT_TAG
     file_id: str | None = None
     quote: str | None = None

python/semantic_kernel/contents/streaming_file_reference_content.py

@@ -20,8 +20,9 @@ class StreamingFileReferenceContent(KernelContent):
     """Streaming File reference content."""
 
     content_type: Literal[ContentTypes.STREAMING_FILE_REFERENCE_CONTENT] = Field(
-        STREAMING_FILE_REFERENCE_CONTENT_TAG, init=False
-    )  # type: ignore
+        STREAMING_FILE_REFERENCE_CONTENT_TAG,  # type: ignore
+        init=False,
+    )
     tag: ClassVar[str] = STREAMING_FILE_REFERENCE_CONTENT_TAG
     file_id: str | None = None