Remove separate 3.11 CI now deps support 3.11 (psf#3446)

* Remove separate 3.11 CI now deps support 3.11

- We can run everything now like all other stable versions of Python
- test in a 3.11 vent: `/tmp/tb/bin/tox -e py311,ci-py311`

```
  py311: OK (28.99=setup[7.90]+cmd[5.29,0.66,6.94,6.08,1.89,0.24] seconds)
  ci-py311: OK (30.33=setup[3.20]+cmd[3.66,0.31,17.43,4.60,0.90,0.23] seconds)
  congratulations :) (59.35 seconds)
```

* Add to CHANGES.md

* Add fuzz run in 3.11

.github/workflows/fuzz.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps:
       - uses: actions/checkout@v3

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "pypy-3.7", "pypy-3.8"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "pypy-3.7", "pypy-3.8"]
         os: [ubuntu-latest, macOS-latest, windows-latest]
 
     steps:

CHANGES.md

@@ -57,6 +57,8 @@
 
 <!-- For example, Docker, GitHub Actions, pre-commit, editors -->
 
+- Move 3.11 CI to normal flow now all dependencies support 3.11 (#3446)
+
 ### Documentation
 
 <!-- Major changes to documentation and policies. Small docs changes