chore(deps): update https://github.com/actions/setup-node action to v6

.forgejo/workflows/documentation.yml

@@ -55,7 +55,7 @@ jobs:
 
       - name: Setup Node.js
         if: steps.runner-env.outputs.node_major == '' || steps.runner-env.outputs.node_major < '20'
-        uses: https://github.com/actions/setup-node@v5
+        uses: https://github.com/actions/setup-node@v6
         with:
           node-version: 22
 

.forgejo/workflows/element.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: 📦 Setup Node.js
-        uses: https://github.com/actions/setup-node@v5
+        uses: https://github.com/actions/setup-node@v6
         with:
           node-version: "22"