Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js 18.x
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: 18.x
       - run: echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_AUTH_TOKEN }}" > ~/.npmrc
@@ -56,7 +56,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node-version }}
       - name: "Setup Localstack"

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Node.js 18.x
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: 18.x
       - run: echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_AUTH_TOKEN }}" > ~/.npmrc