chore(deps): 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] <[email protected]>

.github/workflows/trivy.yml

@@ -72,7 +72,7 @@ jobs:
         run: docker build -t localhost:5000/traceability-foss:fe_${{ github.sha }} -f ./frontend/Dockerfile .
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@0.19.0
+        uses: aquasecurity/trivy-action@0.21.0
         with:
           trivyignores: "./.github/workflows/.trivyignore"
           image-ref: 'localhost:5000/traceability-foss:fe_${{ github.sha }}'
@@ -132,7 +132,7 @@ jobs:
           ref: ${{needs.prepare-env.outputs.check_sha}}
 
       - name: Run Trivy vulnerability scanner in repo mode
-        uses: aquasecurity/trivy-action@0.19.0
+        uses: aquasecurity/trivy-action@0.21.0
         with:
           trivyignores: "./.github/workflows/.trivyignore"
           scan-type: "config"
@@ -178,7 +178,7 @@ jobs:
           tags: localhost:5000/traceability-foss:trivy
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@0.19.0
+        uses: aquasecurity/trivy-action@0.21.0
         with:
           image-ref: localhost:5000/traceability-foss:trivy
           trivyignores: "./.github/workflows/.trivyignore"