Bump actions to v6 in test-js.yml and run prettier on token-refresh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ksroda-sa

.github/workflows/test-js.yml

@@ -20,7 +20,7 @@ jobs:
     outputs:
       matrix: ${{ steps.find.outputs.matrix }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - id: find
         run: |
           DIRS=$(find samples -name "package.json" -not -path "*/node_modules/*" -exec dirname {} \; 2>/dev/null | sort | jq -R -s -c 'split("\n") | map(select(. != ""))')
@@ -35,8 +35,8 @@ jobs:
       matrix:
         project: ${{ fromJson(needs.find-projects.outputs.matrix) }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
         with:
           node-version: "22"
       - name: Enable Corepack