Python: Bump Python version to 0.4.1. Make TextMemorySkill attributes ClassVar. (#4001)

Bump Python version to 0.4.1. Make TextMemorySkill attributes ClassVar.

### Motivation and Context

Bumping Python version to 0.4.1 for next release. Fix TextMemorySkill
attribute error to make it be a ClassVar after upgrading to Pydantic
2.0.

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### Description

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### 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: Evan Mattson <[email protected]>

Author: moonbox3

python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "semantic-kernel"
-version = "0.4.0.dev"
+version = "0.4.1.dev"
 description = ""
 authors = ["Microsoft <[email protected]>"]
 readme = "pip/README.md"

python/semantic_kernel/core_skills/text_memory_skill.py

@@ -1,6 +1,7 @@
 # Copyright (c) Microsoft. All rights reserved.
 import json
 import typing as t
+from typing import ClassVar
 
 from semantic_kernel.sk_pydantic import SKBaseModel
 from semantic_kernel.skill_definition import sk_function, sk_function_context_parameter
@@ -10,13 +11,13 @@
 
 
 class TextMemorySkill(SKBaseModel):
-    COLLECTION_PARAM: str = "collection"
-    RELEVANCE_PARAM: str = "relevance"
-    KEY_PARAM: str = "key"
-    LIMIT_PARAM: str = "limit"
-    DEFAULT_COLLECTION: str = "generic"
-    DEFAULT_RELEVANCE: float = 0.75
-    DEFAULT_LIMIT: int = 1
+    COLLECTION_PARAM: ClassVar[str] = "collection"
+    RELEVANCE_PARAM: ClassVar[str] = "relevance"
+    KEY_PARAM: ClassVar[str] = "key"
+    LIMIT_PARAM: ClassVar[str] = "limit"
+    DEFAULT_COLLECTION: ClassVar[str] = "generic"
+    DEFAULT_RELEVANCE: ClassVar[float] = 0.75
+    DEFAULT_LIMIT: ClassVar[int] = 1
 
     # @staticmethod
     @sk_function(