Build docs on Jammy / 3.11

.github/workflows/ci.yml

@@ -169,20 +169,11 @@ jobs:
     name: Build docs & run doctests
     runs-on: ubuntu-latest
     steps:
-      - name: Harden Runner
-        uses: step-security/harden-runner@v2
-        with:
-          egress-policy: block
-          allowed-endpoints: >
-            docs.python.org:443
-            files.pythonhosted.org:443
-            github.com:443
-            pypi.org:443
-
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          # Keep in-sync with .readthedocs.yaml and tox.ini/docs.
+          python-version: "3.11"
       - run: python -Im pip install --upgrade wheel tox
 
       - run: tox run -e docs

.readthedocs.yaml

@@ -3,10 +3,10 @@ version: 2
 formats: all
 
 build:
-  os: ubuntu-20.04
+  os: ubuntu-22.04
   tools:
     # Keep version in-sync with tox.ini/docs and ci.yml/docs.
-    python: "3.10"
+    python: "3.11"
 
 python:
   install:

tox.ini

@@ -17,7 +17,7 @@ env_list =
 [testenv:docs]
 description = Build docs and run doctests.
 # Keep base_python in-sync with .readthedocs.yaml and ci.yml/docs.
-base_python = python3.10
+base_python = python3.11
 extras = docs
 commands =
     python -Im doctest README.md