build(deps): bump anchore/scan-action from 6.3.0 to 6.4.0

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]>

Author: dependabot[bot]

.github/workflows/anchore.yml

@@ -43,7 +43,7 @@ jobs:
     - name: List the Docker image
       run: docker image ls
     - name: Run the Anchore scan action itself with GitHub Advanced Security code scanning integration enabled
-      uses: anchore/scan-action@be7a22da4f22dde446c4c4c099887ff5b256526c # 6.3.0
+      uses: anchore/scan-action@16910ac423301c6d30554b83a7f71ac6ff4a51f3 # 6.4.0
       id: scan
       with:
         image: "localbuild/testimage:latest"