Update project_urls in setup.py (#16622)

Made the following changes to `project_urls` in `setup.py`:
- removed link to "News" 
- added link to "Changelog" 
- added link to "Issues"

setup.py

@@ -234,8 +234,9 @@ def run(self):
     python_requires=">=3.8",
     include_package_data=True,
     project_urls={
-        "News": "https://mypy-lang.org/news.html",
         "Documentation": "https://mypy.readthedocs.io/en/stable/index.html",
         "Repository": "https://github.com/python/mypy",
+        "Changelog": "https://github.com/python/mypy/blob/master/CHANGELOG.md",
+        "Issues": "https://github.com/python/mypy/issues",
     },
 )