Bump anchore/scan-action from 6.3.0 to 6.4.0 (#296)

Bumps [anchore/scan-action](https://github.com/anchore/scan-action) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/anchore/scan-action/releases)
- [Changelog](https://github.com/anchore/scan-action/blob/main/RELEASE.md)
- [Commits](anchore/scan-action@be7a22d...16910ac)

---
updated-dependencies:
- dependency-name: anchore/scan-action
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/scan-image-grype.yml

@@ -120,7 +120,7 @@ jobs:
           } >> "$GITHUB_OUTPUT"
       
       - name: Scan image with Grype
-        uses: anchore/scan-action@be7a22da4f22dde446c4c4c099887ff5b256526c
+        uses: anchore/scan-action@16910ac423301c6d30554b83a7f71ac6ff4a51f3
         id: scan
         continue-on-error: true  # Allow workflow to continue even if scan fails
         with: