Python: Fix syntax for pinned pydantic package. (#9789)

### Motivation and Context

The current pydantic pinned syntax is `"pydantic ~= 2.0<2.10",`; however
on package publish, Pypi throws a 400. The correct syntax should be:
`"pydantic >=2.0,<2.10",`

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### Description

Updates pyproject.toml syntax for pinned pydantic version.

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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/pyproject.toml

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