build(deps): bump actions/create-github-app-token (#290)

Bumps the github-actions group with 1 update: [actions/create-github-app-token](https://github.com/actions/create-github-app-token).


Updates `actions/create-github-app-token` from 2 to 3
- [Release notes](https://github.com/actions/create-github-app-token/releases)
- [Commits](actions/create-github-app-token@v2...v3)

---
updated-dependencies:
- dependency-name: actions/create-github-app-token
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -46,7 +46,7 @@ jobs:
     steps:
     - name: Generate token for PyPSA Bot
       id: generate-token
-      uses: actions/create-github-app-token@v2
+      uses: actions/create-github-app-token@v3
       with:
         app-id: ${{ vars.PYPSA_BOT_ID }}
         private-key: ${{ secrets.PYPSA_BOT_PRIVATE_KEY }}