feat(root): bump version to 0.3.0 and update dependencies

Update metadata and pin production dependencies for reproducible builds.

setup.py

@@ -6,7 +6,7 @@ from setuptools import find_packages, setup
 
 setup(
     name="devgen-cli",
-    version="0.2.9",
+    version="0.3.0",
     packages=find_packages(),
     include_package_data=True,
     install_requires=[