Update actions/setup-node action to v6 (#93)

Author: renovate[bot]

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
           submodules: 'recursive'
 
       - name: Set up Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '22'
 
@@ -39,7 +39,7 @@ jobs:
         submodules: 'recursive'
 
     - name: Set up Node.js
-      uses: actions/setup-node@v5
+      uses: actions/setup-node@v6
       with:
         node-version: '22'