Bump aquasecurity/trivy-action from 0.16.1 to 0.21.0

Bumps [aquasecurity/trivy-action](https://github.com/aquasecurity/trivy-action) from 0.16.1 to 0.21.0.
- [Release notes](https://github.com/aquasecurity/trivy-action/releases)
- [Commits](aquasecurity/trivy-action@0.16.1...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_scan.yml

@@ -36,7 +36,7 @@ jobs:
         docker pull antrea/antrea-ubuntu:${{ steps.find-antrea-greatest-version.outputs.antrea_version }}
     - name: Run Trivy vulnerability scanner on latest Antrea Docker image
       if: ${{ always() && steps.pull.conclusion == 'success' }}
-      uses: aquasecurity/trivy-action@0.16.1
+      uses: aquasecurity/trivy-action@0.21.0
       # we cannot use .trivy.yml as we need to override some config parameters
       # and that is not supported by aquasecurity/trivy-action
       with:
@@ -51,7 +51,7 @@ jobs:
         output: 'trivy.latest.txt'
     - name: Run Trivy vulnerability scanner on Antrea Docker image for latest released version
       if: ${{ always() && steps.pull.conclusion == 'success' }}
-      uses: aquasecurity/trivy-action@0.16.1
+      uses: aquasecurity/trivy-action@0.21.0
       with:
         scan-type: 'image'
         image-ref: 'antrea/antrea-ubuntu:${{ steps.find-antrea-greatest-version.outputs.antrea_version }}'

.github/workflows/trivy_scan_before_release.yml

@@ -15,19 +15,19 @@ jobs:
       run: |
         ./hack/build-antrea-linux-all.sh --pull
     - name: Run Trivy vulnerability scanner on Antrea unified Docker image
-      uses: aquasecurity/trivy-action@0.16.1
+      uses: aquasecurity/trivy-action@0.21.0
       with:
         scan-type: 'image'
         image-ref: 'antrea/antrea-ubuntu:latest'
         trivy-config: '.trivy.yml'
     - name: Run Trivy vulnerability scanner on the antrea-agent Docker image
-      uses: aquasecurity/trivy-action@0.16.1
+      uses: aquasecurity/trivy-action@0.21.0
       with:
         scan-type: 'image'
         image-ref: 'antrea/antrea-agent-ubuntu:latest'
         trivy-config: '.trivy.yml'
     - name: Run Trivy vulnerability scanner on the antrea-controller Docker image
-      uses: aquasecurity/trivy-action@0.16.1
+      uses: aquasecurity/trivy-action@0.21.0
       with:
         scan-type: 'image'
         image-ref: 'antrea/antrea-controller-ubuntu:latest'