Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/web.yml

@@ -52,7 +52,7 @@ jobs:
       - name: Install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
         working-directory: .
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: "22"
           cache: "npm"
@@ -81,7 +81,7 @@ jobs:
       - name: Install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
         working-directory: .
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: "22"
           cache: "npm"