fix(deps): update nabeken/go-github-apps digest to afd4a1d (#61)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [nabeken/go-github-apps](https://togithub.com/nabeken/go-github-apps)
| action | digest | `ad9874f` -> `afd4a1d` |

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.github/workflows/release-please.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Get GITHUB_TOKEN for release
-        uses: nabeken/go-github-apps@ad9874fea2c2c0799b7bc0dece5e3f1251c72eaf # v0
+        uses: nabeken/go-github-apps@afd4a1da8d2eafaa6902580a943dc17dfd055ba9 # v0
         id: go-github-apps
         with:
           app_id: ${{ secrets.release_gh_app_id }}