Update min python version to be 2.28.0 (#13869)

https://github.com/getsentry/sentry-python/releases/tag/2.28.0

This moves off of using `otel_log`, which we want to avoid sdk users
sending.

Author: AbhiPrasad

platform-includes/logs/requirements/python.mdx

@@ -1,8 +1,8 @@
-Logs for Python are supported in Sentry Python SDK version `2.27.0` and above.
+Logs for Python are supported in Sentry Python SDK version `2.28.0` and above.
 
 ```bash {tabTitle:pip}
 pip install "sentry-sdk"
 ```
 ```bash {tabTitle:uv}
 uv add "sentry-sdk"
-```
+```