Improve the news file and the CI

Author: DiddiLeija

.github/workflows/ci.yml

@@ -84,7 +84,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
 
-      - run: pip install vendoring nox
+      - run: pip install nox
       - run: nox -s vendoring
       - run: git diff --exit-code