fix: get version from pyproject instead of init

Author: jacobmanderson

pyproject.toml

@@ -13,7 +13,6 @@ xdfail_strict=true
 markers = ["sleepdeprived_patched_module", "masked_modules", "patched_environ", "patched_module"]
 
 [tool.semantic_release]
-version_variable = ["celery/__init__.py:__version__"]
 version_toml = ["pyproject.toml:tool.poetry.version"]
 branch = "development"
 upload_to_respository=true