Bump anchore/scan-action from 3 to 4

Bumps [anchore/scan-action](https://github.com/anchore/scan-action) from 3 to 4.
- [Release notes](https://github.com/anchore/scan-action/releases)
- [Changelog](https://github.com/anchore/scan-action/blob/main/CHANGELOG.md)
- [Commits](anchore/scan-action@v3...v4)

---
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/ci.yml

@@ -143,7 +143,7 @@ jobs:
       if: always()
 
     - name: Run Anchore image scanner (distroless)
-      uses: anchore/scan-action@v3
+      uses: anchore/scan-action@v4
       id: anchore-distroless
       with:
         image: 'ghcr.io/ffurrer2/semver:latest'