build: build docs for wip/alt-comm branch

Author: foosel

.github/workflows/docs.yaml

@@ -40,6 +40,12 @@ jobs:
             sphinx: "8.2.3"
             mermaid: "1.0.0"
             jinja: "3.1.1"
+          - version: "wip/alt-comm"
+            source: "heads"
+            python: "3.12"
+            sphinx: "8.2.3"
+            mermaid: "1.0.0"
+            jinja: "3.1.1"
     steps:
       - name: 🧾 Log event & matrix
         run: |
@@ -189,7 +195,7 @@ jobs:
 
           echo "Versions:"
           cat versions.json
-  
+
       - name: 🚀 Commit & deploy
         uses: EndBug/add-and-commit@v9
         with: