chore(deps): update actions/setup-node action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
         node: [18]
 
     steps:
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
 

.github/workflows/release-please.yml

@@ -20,7 +20,7 @@ jobs:
           package-name: '@netlify/ipx'
       - uses: actions/checkout@v4
         if: ${{ steps.release.outputs.release_created }}
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: '*'
           cache: 'npm'