CU-8697c86rf: Fix docs build requirements (hopefully)

Author: mart-r

docs/requirements.txt

@@ -76,7 +76,7 @@ safetensors==0.4.5
 scikit-learn==1.6.0
 scipy==1.13.1
 six==1.17.0
-smart-open==7.1.0
+smart-open==6.4.0
 spacy==3.7.5
 spacy-legacy==3.0.12
 spacy-loggers==1.0.5
@@ -103,4 +103,4 @@ wasabi==1.1.3
 wcwidth==0.2.13
 widgetsnbextension==4.0.13
 xxhash==3.5.0
-yarl==1.18.3
+yarl==1.18.3