chore(deps): update actions/setup-node action to v6 (#579)

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

Author: renovate[bot]

.github/workflows/autofix.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: pnpm/action-setup@v4
         with:
           version: 9
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: pnpm

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: pnpm/action-setup@v4
         with:
           version: 9
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: pnpm