pinned Jinja version

See readthedocs/readthedocs.org#9064

Author: ArjoNagelhout

.readthedocs.yaml

@@ -0,0 +1,24 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# # Set the version of Python and other tools you might need
+# build:
+#   os: ubuntu-22.04
+#   tools:
+#     python: "3.11"
+#     # You can also specify other tool versions:
+#     # nodejs: "19"
+#     # rust: "1.64"
+#     # golang: "1.19"
+
+mkdocs:
+  configuration: mkdocs.yml
+
+# Optionally declare the Python requirements required to build your docs
+python:
+   install:
+   - requirements: docs/requirements.txt

docs/requirements.txt

@@ -0,0 +1 @@
+Jinja2<3.1.0