build(deps): bump anchore/scan-action from 5 to 6

Bumps [anchore/scan-action](https://github.com/anchore/scan-action) from 5 to 6.
- [Release notes](https://github.com/anchore/scan-action/releases)
- [Changelog](https://github.com/anchore/scan-action/blob/main/CHANGELOG.md)
- [Commits](anchore/scan-action@v5...v6)

---
updated-dependencies:
- dependency-name: anchore/scan-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/check-latest-release.yml

@@ -70,7 +70,7 @@ jobs:
           fi
       - name: Scan latest release image
         id: scan-image
-        uses: anchore/scan-action@v5
+        uses: anchore/scan-action@v6
         with:
           image: docker.io/buildpacksio/pack:${{ steps.read-go.outputs.latest-release-version }}
       - name: Create issue if needed