ci(action): update actions/setup-node action to v6 (#319)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: lts/*
           cache: npm

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Use Node.js ${{ matrix.node_version }}
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node_version }}
           cache: npm

.github/workflows/update-prettier.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           cache: npm
           node-version: 24