chore(deps): update node.js to cb61978 (#4206)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [node](https://redirect.github.com/nodejs/node) | stage | digest |
`8cdc6b9` -> `cb61978` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Configuration

📅 **Schedule**: Branch creation - "before 6am on wednesday" in timezone
Australia/Sydney, Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/google/osv.dev).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4xNTYuMSIsInVwZGF0ZWRJblZlciI6IjQxLjE1Ni4xIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImRlcGVuZGVuY2llcyJdfQ==-->

Author: renovate-bot

gcp/website/Dockerfile

@@ -1,5 +1,5 @@
 # Build the Javascript frontend
-FROM node:20.19@sha256:8cdc6b9b711af0711cc6139955cc1331fab5e0a995afd3260c52736fbc338059 AS FRONTEND3_BUILD
+FROM node:20.19@sha256:cb61978c7e08f58f6042ae65dd21981838804b14eb023b55a1be91d17385609f AS FRONTEND3_BUILD
 WORKDIR /build/frontend3
 
 # Install dependencies first for better caching