chore: update GitHub Actions to latest versions

- actions/checkout: v4 -> v5
- actions/setup-node: v4 -> v5
- actions/upload-artifact: v4 -> v5
- actions/create-github-app-token: v2 (already latest)
- dependabot/fetch-metadata: v2 (already latest)

Author: seijikohara

.github/workflows/npm-ci.yml

@@ -10,9 +10,9 @@ jobs:
       matrix:
         node-version: [20.x, 22.x, 24.x]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: ${{ matrix.node-version }}
           cache: "npm"

.github/workflows/npm-publish.yml

@@ -11,8 +11,8 @@ jobs:
   publish-npm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v5
+      - uses: actions/setup-node@v5
         with:
           node-version: 22
           registry-url: https://registry.npmjs.org/

.github/workflows/playwright.yml

@@ -14,10 +14,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         browser: [chromium, firefox, webkit]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: 20
           cache: "npm"
@@ -32,7 +32,7 @@ jobs:
         run: npx playwright test --project=${{ matrix.browser }}
 
       - name: Upload test results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         if: ${{ !cancelled() }}
         with:
           name: playwright-report-${{ matrix.os }}-${{ matrix.browser }}