Bump docutils requirement for main.txt only (#18971)

Author: di

requirements/main.txt

@@ -608,9 +608,9 @@ dnspython==2.8.0 \
     # via
     #   -r requirements/main.in
     #   email-validator
-docutils==0.21.2 \
-    --hash=sha256:3a6b18732edf182daa3cd12775bbb338cf5691468f91eeeb109deff6ebfa986f \
-    --hash=sha256:dafca5b9e384f0e419294eb4d2ff9fa826435bf15f15b7bd45723e8ad76811b2
+docutils==0.22.2 \
+    --hash=sha256:9fdb771707c8784c8f2728b67cb2c691305933d68137ef95a75db5f4dfbc213d \
+    --hash=sha256:b0e98d679283fc3bb0ead8a5da7f501baa632654e7056e9c5846842213d674d8
     # via readme-renderer
 email-validator==2.3.0 \
     --hash=sha256:80f13f623413e6b197ae73bb10bf4eb0908faf509ad8362c5edeb0be7fd450b4 \