### Motivation and Context
Bumps the Python package version for the next release.
### Description
Updates `semantic_kernel.__version__` from `1.43.1` to `1.44.0`.
### Contribution Checklist
- [x] The code builds clean without any errors or warnings
- [x] The PR follows the SK Contribution Guidelines and the
pre-submission formatting script raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I did not break anyone 😄