Merge pull request #319 from sa-tre/dependabot/pip/docs/openpyxl-3.1.3

Bump openpyxl from 3.1.2 to 3.1.3 in /docs

docs/requirements.txt

@@ -41,7 +41,7 @@ mdurl==0.1.2
     # via markdown-it-py
 myst-parser==3.0.1
     # via -r requirements.in
-openpyxl==3.1.2
+openpyxl==3.1.3
     # via -r requirements.in
 packaging==23.1
     # via sphinx