Bump semantic-kernel from 1.39.3 to 1.39.4

Bumps [semantic-kernel](https://github.com/microsoft/semantic-kernel) from 1.39.3 to 1.39.4.
- [Release notes](https://github.com/microsoft/semantic-kernel/releases)
- [Commits](microsoft/semantic-kernel@python-1.39.3...python-1.39.4)

---
updated-dependencies:
- dependency-name: semantic-kernel
  dependency-version: 1.39.4
  dependency-type: indirect
...

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Author: dependabot[bot]