build: no more 3.11 nightly builds

.github/workflows/python-nightly.yml

@@ -37,8 +37,8 @@ jobs:
     # because jammy ships 3.10, and deadsnakes doesn't want to clobber it.
     # https://launchpad.net/~deadsnakes/+archive/ubuntu/nightly/+packages
     # https://github.com/deadsnakes/issues/issues/234
-    # bionic: 18, focal: 20, jammy: 22
-    runs-on: ubuntu-20.04
+    # bionic: 18, focal: 20, jammy: 22, noble: 24
+    runs-on: ubuntu-22.04
     # If it doesn't finish in an hour, it's not going to. Don't spin for six
     # hours needlessly.
     timeout-minutes: 60
@@ -50,7 +50,6 @@ jobs:
           # tox.ini so that tox will run properly. PYVERSIONS
           # Available versions:
           # https://launchpad.net/~deadsnakes/+archive/ubuntu/nightly/+packages
-          - "3.11-dev"
           - "3.12-dev"
           - "3.13-dev"
           # https://github.com/actions/setup-python#available-versions-of-pypy