Bump actions/create-github-app-token from 1 to 2

Bumps [actions/create-github-app-token](https://github.com/actions/create-github-app-token) from 1 to 2.
- [Release notes](https://github.com/actions/create-github-app-token/releases)
- [Commits](actions/create-github-app-token@v1...v2)

---
updated-dependencies:
- dependency-name: actions/create-github-app-token
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/rbs-collection-updater.yml

@@ -19,7 +19,7 @@ jobs:
 
       - run: bundle exec rbs collection update
 
-      - uses: actions/create-github-app-token@v1
+      - uses: actions/create-github-app-token@v2
         id: app-token
         with:
           app-id: ${{ secrets.RUBY_GO_GEM_BOT_APP_ID }}