Bump brettcannon/check-for-changed-files from 1.2.0 to 1.2.1

Bumps [brettcannon/check-for-changed-files](https://github.com/brettcannon/check-for-changed-files) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/brettcannon/check-for-changed-files/releases)
- [Commits](brettcannon/check-for-changed-files@v1.2.0...v1.2.1)

---
updated-dependencies:
- dependency-name: brettcannon/check-for-changed-files
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/changelog-check.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: "Check for changelog entry"
-        uses: brettcannon/check-for-changed-files@v1.2.0
+        uses: brettcannon/check-for-changed-files@v1.2.1
         with:
           file-pattern: |
             .changes/unreleased/*.yaml