fix: upgrade packaging>=24.2

- resolves error with twine upload
```
ERROR    InvalidDistribution: Invalid distribution metadata: unrecognized or    
         malformed field 'license-file'    
```

Author: AbigailColwell

.github/workflows/test_linux.yml

@@ -125,6 +125,8 @@ jobs:
     - name: Publish wheels and sdist
       if: github.repository_owner == 'pymssql' && startsWith(github.ref, 'refs/tags/v')
       run: |
+        # upgrade packaging for PEP 639
+        pip install packaging>=24.2 --upgrade 
         pip install twine --upgrade
         twine upload --skip-existing -u __token__ -p ${{secrets.PYMSSQL_PYPI_TOKEN}} dist/*