Meta: update upload-artifact action prior to deprecation (#3506)

See https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/

Author: ljharb

.github/workflows/preview-build.yml

@@ -19,7 +19,7 @@ jobs:
       - run: npm run build-only
       - run: node scripts/insert_snapshot_warning
       - run: echo ${{ github.event.number }} > out/pr.txt
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: out
           path: out/

.github/workflows/preview.yml

@@ -27,7 +27,7 @@ jobs:
           node-version: lts/*
           use-npm-ci: true
       - name: 'Download artifact'
-        uses: actions/github-script@v3.1.0
+        uses: actions/github-script@v7
         with:
           script: |
             const { owner, repo } = context.repo;
@@ -47,7 +47,7 @@ jobs:
             fs.writeFileSync('${{ github.workspace }}/out.zip', Buffer.from(download.data));
       - run: unzip -o out.zip -d out
       - name: 'debug info'
-        uses: actions/github-script@v3.1.0
+        uses: actions/github-script@v7
         with:
           script: |
             console.log(${{ toJson(github.event) }});