Update actions/setup-node action to v6.4.0 (#366)

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

Author: renovate[bot]

.github/workflows/main.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Setup Node.js environment
-        uses: actions/setup-node@v6.3.0
+        uses: actions/setup-node@v6.4.0
         with:
           node-version-file: ".nvmrc"