Merge pull request #182 from firefly-cpp/dependabot/pip/docs/idna-3.15

Bump idna from 3.11 to 3.15 in /docs

Author: firefly-cpp

docs/requirements.txt

@@ -24,7 +24,7 @@ et-xmlfile==2.0.0
     # via openpyxl
 fonttools==4.61.0
     # via matplotlib
-idna==3.11
+idna==3.15
     # via requests
 imagesize==1.4.1
     # via sphinx