[airflow] branch master updated: Limits Sphinx to <3.5.0 (#14238)

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The following commit(s) were added to refs/heads/master by this push:
     new da80b69  Limits Sphinx to <3.5.0 (#14238)
da80b69 is described below

commit da80b69812b12377efddf5ad9763ee09f89a9f31
Author: Jarek Potiuk <ja...@potiuk.com>
AuthorDate: Mon Feb 15 14:05:49 2021 +0100

    Limits Sphinx to <3.5.0 (#14238)
    
    Sphinx 3.5.0 released on 14th of Feb introduced a problem in our
    doc builds.
    
    It is documented in https://github.com/sphinx-doc/sphinx/issues/8880
    
    Until this problem is solved we are limiting Sphinx.
---
 setup.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 76b5bde..a5e8869 100644
--- a/setup.py
+++ b/setup.py
@@ -244,7 +244,8 @@ datadog = [
     'datadog>=0.14.0',
 ]
 doc = [
-    'sphinx>=2.1.2',
+    # Sphinx is limited to < 3.5.0 because of https://github.com/sphinx-doc/sphinx/issues/8880
+    'sphinx>=2.1.2, <3.5.0',
     f'sphinx-airflow-theme{get_sphinx_theme_version()}',
     'sphinx-argparse>=0.1.13',
     'sphinx-autoapi==1.0.0',