Update dependency node to v18.20.6-12900463507 (#35104)

This PR contains the following updates:

| Package | Type | Update | Change | Pending |
|---|---|---|---|---|
| [node](https://redirect.github.com/actions/node-versions) | uses-with | minor | `18.18.0` -> `18.20.6-12900463507` | `18.20.7-13438827950` |

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GitOrigin-RevId: 8555313676f0406d06b13ef34347ee1cf9d1235f

Author: convex-renovate-runner[bot]

npm-packages/convex/.github/workflows/test-and-lint.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Node setup
         uses: actions/setup-node@v4
         with:
-          node-version: "18.18.0"
+          node-version: "18.20.6-12900463507"
 
       - name: NPM v8
         run: npm install -g npm@8 --registry=https://registry.npmjs.org