Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version: '20.x'
           registry-url: 'https://registry.npmjs.org'

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: npm