chore(deps): bump @octokit/core in /dev/del-old-packages (ietf-tools#5303)

Bumps [@octokit/core](https://github.com/octokit/core.js) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/octokit/core.js/releases)
- [Commits](octokit/core.js@v4.1.0...v4.2.0)

---
updated-dependencies:
- dependency-name: "@octokit/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

dev/del-old-packages/package-lock.json

@@ -10,7 +10,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@octokit/core": "^4.1.0",
+    "@octokit/core": "^4.2.0",
     "luxon": "^3.2.1"
   }
 }