build: bump dependabot/fetch-metadata from 1.3.6 to 1.6.0 (#89)

Bumps [dependabot/fetch-metadata](https://github.com/dependabot/fetch-metadata) from 1.3.6 to 1.6.0.
- [Release notes](https://github.com/dependabot/fetch-metadata/releases)
- [Commits](dependabot/fetch-metadata@v1.3.6...v1.6.0)

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

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

Author: dependabot[bot]

.github/workflows/pr-metadata.yml

@@ -27,7 +27,7 @@ jobs:
     if: ${{ github.actor == 'dependabot[bot]' }}
     runs-on: ubuntu-latest
     steps:
-      - uses: dependabot/fetch-metadata@v1.3.6
+      - uses: dependabot/fetch-metadata@v1.6.0
         id: dependabot-metadata
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"