build(deps): bump docutils from 0.21.2 to 0.22 in /docs (#3166)

Bumps [docutils](https://github.com/rtfd/recommonmark) from 0.21.2 to
0.22.
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docs/requirements.txt

diff --git a/docs/requirements.txt b/docs/requirements.txt
index d115858..cda477c 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -111,9 +111,9 @@
     --hash=sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44 \
     --hash=sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6
     # via sphinx
-docutils==0.21.2 \
-    --hash=sha256:3a6b18732edf182daa3cd12775bbb338cf5691468f91eeeb109deff6ebfa986f \
-    --hash=sha256:dafca5b9e384f0e419294eb4d2ff9fa826435bf15f15b7bd45723e8ad76811b2
+docutils==0.22 \
+    --hash=sha256:4ed966a0e96a0477d852f7af31bdcb3adc049fbb35ccba358c2ea8a03287615e \
+    --hash=sha256:ba9d57750e92331ebe7c08a1bbf7a7f8143b86c476acd51528b042216a6aad0f
     # via
     #   myst-parser
     #   sphinx