bump version to 0.2.1 (#144)

Author: TheGupta2012

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pyqasm"
-version = "0.2.1-alpha"
+version = "0.2.1"
 description = "Python toolkit providing an OpenQASM 3 semantic analyzer and utilities for program analysis and compilation."
 authors = [{name = "qBraid Development Team"}, {email = "contact@qbraid.com"}]
 readme = "README.md"