chore(deps): update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: npm

.github/workflows/npm-publish.yml

@@ -21,7 +21,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           registry-url: https://registry.npmjs.org/