Bump octokit from 2.0.7 to 3.1.2 in /.github/scripts

Bumps [octokit](https://github.com/octokit/octokit.js) from 2.0.7 to 3.1.2.
- [Release notes](https://github.com/octokit/octokit.js/releases)
- [Commits](octokit/octokit.js@v2.0.7...v3.1.2)

---
updated-dependencies:
- dependency-name: octokit
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/scripts/package.json

@@ -4,7 +4,7 @@
   "license": "MIT",
   "dependencies": {
     "@polkadot/util-crypto": "^10.1.10",
-    "octokit": "^2.0.7",
+    "octokit": "^3.1.2",
     "ts-node": "^10.9.1",
     "typescript": "^4.8.4",
     "yargs": "^17.6.0"