fix: relax packaging dependency bound (#26)

relax `packaging` bound as it is incompatible with vyper 0.4.0

https://github.com/vyperlang/vyper/blob/v0.4.0/setup.py#L96

Author: DanielSchiavini

setup.py

@@ -17,7 +17,7 @@
     include_package_data=True,
     py_modules=["vvm"],
     python_requires=">=3.8, <4",
-    install_requires=["requests>=2.32.3,<3", "packaging>=24.1,<25"],
+    install_requires=["requests>=2.32.3,<3", "packaging>=23.1,<25"],
     license="MIT",
     zip_safe=False,
     keywords="ethereum vyper",