chore(deps-dev): bump @octokit/graphql-schema in the octokit group

Bumps the octokit group with 1 update: [@octokit/graphql-schema](https://github.com/octokit/graphql-schema).


Updates `@octokit/graphql-schema` from 15.14.0 to 15.15.0
- [Release notes](https://github.com/octokit/graphql-schema/releases)
- [Commits](octokit/graphql-schema@v15.14.0...v15.15.0)

---
updated-dependencies:
- dependency-name: "@octokit/graphql-schema"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: octokit
...

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

package.json

@@ -59,7 +59,7 @@
     "@graphql-codegen/client-preset": "4.2.5",
     "@graphql-typed-document-node/core": "3.2.0",
     "@ianvs/prettier-plugin-sort-imports": "4.2.1",
-    "@octokit/graphql-schema": "15.14.0",
+    "@octokit/graphql-schema": "15.15.0",
     "@octokit/webhooks-schemas": "7.5.1",
     "@octokit/webhooks-types": "7.5.1",
     "@total-typescript/ts-reset": "0.5.1",