Bump dependabot/fetch-metadata from 2.4.0 to 2.5.0

Bumps [dependabot/fetch-metadata](https://github.com/dependabot/fetch-metadata) from 2.4.0 to 2.5.0.
- [Release notes](https://github.com/dependabot/fetch-metadata/releases)
- [Commits](08eff52bf6...21025c705c)

---
updated-dependencies:
- dependency-name: dependabot/fetch-metadata
  dependency-version: 2.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/dependabot_automerge.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'ruby/ruby'
     steps:
       - name: Dependabot metadata
-        uses: dependabot/fetch-metadata@08eff52bf64351f401fb50d4972fa95b9f2c2d1b # v2.4.0
+        uses: dependabot/fetch-metadata@21025c705c08248db411dc16f3619e6b5f9ea21a # v2.5.0
         id: metadata
 
       - name: Wait for status checks