Bump @octokit/rest from 18.9.0 to 18.12.0

Bumps [@octokit/rest](https://github.com/octokit/rest.js) from 18.9.0 to 18.12.0.
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v18.9.0...v18.12.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -20,7 +20,7 @@
   "license": "MIT",
   "dependencies": {
     "@actions/core": "^1.6.0",
-    "@octokit/rest": "^18.9.0",
+    "@octokit/rest": "^18.12.0",
     "@types/semver": "^7.3.8",
     "semver": "^7.3.5"
   },