Infra: Build RTD previews with latest Python (python#3538)

Author: hugovk

.readthedocs.yaml

@@ -0,0 +1,19 @@
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+# Project page: https://readthedocs.org/projects/pep-previews/
+
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3"
+
+  commands:
+    - make dirhtml JOBS=$(nproc) BUILDDIR=_readthedocs/html
+
+sphinx:
+  builder: dirhtml
+
+search:
+  ignore: ['*']