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

Author: renovate[bot]

.github/workflows/textlint.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Setup node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}
       - run: yarn install