chore(deps): update actions/setup-node action to v6.1.0 (#330)

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

Author: renovate[bot]

.github/workflows/npm-audit.yml

@@ -17,7 +17,7 @@ jobs:
     if: github.repository == 'line/line-bot-mcp-server'
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-      - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+      - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
         with:
           node-version: '24'
           # Enable this when setup-node v5 is released

.github/workflows/release.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       # Setup .npmrc file to publish to GitHub Packages
-      - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+      - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
         with:
           node-version: 24
           registry-url: 'https://registry.npmjs.org'

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
         with:
           submodules: true
       - name: Setup Node.js
-        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+        uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
         with:
           node-version: ${{ matrix.node }}
           cache: 'npm'