Bump aquasecurity/trivy-action from 0.19.0 to 0.21.0

Bumps [aquasecurity/trivy-action](https://github.com/aquasecurity/trivy-action) from 0.19.0 to 0.21.0.
- [Release notes](https://github.com/aquasecurity/trivy-action/releases)
- [Commits](aquasecurity/trivy-action@0.19.0...0.21.0)

---
updated-dependencies:
- dependency-name: aquasecurity/trivy-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/release.yml

@@ -52,7 +52,7 @@ jobs:
  ghcr.io/${{ github.repository }}:${{ env.TAG }}
 
  - name: trivy image scan
- uses: aquasecurity/trivy-action@0.19.0
+ uses: aquasecurity/trivy-action@0.21.0
  with:
  image-ref: ${{ github.repository }}:latest
  exit-code: 0