chore(release): bump version to 1.2.0

Author: github-actions[bot]

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "specthr"
-version = "1.1.10"
+version = "1.2.0"
 description = "HRV / physiological data tooling"
 readme = "README.md"
 requires-python = ">=3.10,<3.14"