Update typing from 3.6.4 to 3.6.6

requirements/docs.txt

@@ -46,10 +46,10 @@ sphinx-rtd-theme==0.4.1 \
     --hash=sha256:80e01ec0eb711abacb1fa507f3eae8b805ae8fa3e8b057abfdf497e3f644c82c \
     --hash=sha256:3b49758a64f8a1ebd8a33cb6cc9093c3935a908b716edfaa5772fd86aac27ef6
 # typing is required by Sphinx
-typing==3.6.4 \
-    --hash=sha256:b2c689d54e1144bbcfd191b0832980a21c2dbcf7b5ff7a66248a60c90e951eb8 \
-    --hash=sha256:3a887b021a77b292e151afb75323dea88a7bc1b3dfa92176cff8e44c8b68bddf \
-    --hash=sha256:d400a9344254803a2368533e4533a4200d21eb7b6b729c173bc38201a74db3f2
+typing==3.6.6 \
+    --hash=sha256:a4c8473ce11a65999c8f59cb093e70686b6c84c98df58c1dae9b3b196089858a \
+    --hash=sha256:57dcf675a99b74d64dacf6fba08fb17cf7e3d5fdff53d4a30ea2a5e7e52543d4 \
+    --hash=sha256:4027c5f6127a6267a435201981ba156de91ad0d1d98e9ddc2aa173453453492d
 sphinxcontrib-websupport==1.1.0 \
     --hash=sha256:68ca7ff70785cbe1e7bccc71a48b5b6d965d79ca50629606c7861a21b206d9dd \
     --hash=sha256:9de47f375baf1ea07cdb3436ff39d7a9c76042c10a769c52353ec46e4e8fc3b9