Merge pull request #9053 from readthedocs/fix-embed-tests

Fix jinja2 on embed tests

Author: ericholscher

tox.embedapi.ini

@@ -29,7 +29,8 @@ deps =
     sphinx-41: Sphinx~=4.1.0
     sphinx-42: Sphinx~=4.2.0
     sphinx-latest: Sphinx
+    jinja2<3.1.0
 setenv =
     DJANGO_SETTINGS_MODULE=readthedocs.settings.test
 changedir = {toxinidir}/readthedocs
-commands = pytest -m embed_api {posargs}
+commands = pytest -m embed_api {posargs}