Bump configspace from 0.7.1 to 1.2.0 in /mlos_core

Bumps [configspace](https://github.com/automl/ConfigSpace) from 0.7.1 to 1.2.0.
- [Release notes](https://github.com/automl/ConfigSpace/releases)
- [Changelog](https://github.com/automl/ConfigSpace/blob/main/changelog.md)
- [Commits](automl/ConfigSpace@v0.7.1...v1.2.0)

---
updated-dependencies:
- dependency-name: configspace
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

mlos_core/setup.py

@@ -97,7 +97,7 @@ def _get_long_desc_from_readme(base_url: str) -> dict:
  'pandas >= 2.2.0;python_version>="3.9"',
  'Bottleneck > 1.3.5;python_version>="3.9"',
  'pandas >= 1.0.3;python_version<"3.9"',
- "ConfigSpace==0.7.1", # Temporarily restrict ConfigSpace version.
+ "ConfigSpace==1.2.0", # Temporarily restrict ConfigSpace version.
  ],
  extras_require=extra_requires,
  **_get_long_desc_from_readme("https://github.com/microsoft/MLOS/tree/main/mlos_core"),