Bump aquasecurity/trivy-action from 0.27.0 to 0.28.0 (#56)

Bumps [aquasecurity/trivy-action](https://github.com/aquasecurity/trivy-action) from 0.27.0 to 0.28.0.
- [Release notes](https://github.com/aquasecurity/trivy-action/releases)
- [Commits](aquasecurity/trivy-action@0.27.0...0.28.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -34,7 +34,7 @@ jobs:
         file: Dockerfile
 
     - name: Run Trivy vulnerability scanner
-      uses: aquasecurity/trivy-action@0.27.0
+      uses: aquasecurity/trivy-action@0.28.0
       with:
         image-ref: rancher/hardened-containerd:${{ env.TAG }}-amd64
         format: 'table'
@@ -74,7 +74,7 @@ jobs:
           ARCH=arm64
 
     - name: Run Trivy vulnerability scanner
-      uses: aquasecurity/trivy-action@0.27.0
+      uses: aquasecurity/trivy-action@0.28.0
       with:
         image-ref: rancher/hardened-containerd:${{ env.TAG }}-arm64
         format: 'table'
@@ -111,7 +111,7 @@ jobs:
         platforms: linux/amd64
 
     - name: Run Trivy vulnerability scanner
-      uses: aquasecurity/trivy-action@0.27.0
+      uses: aquasecurity/trivy-action@0.28.0
       with:
         image-ref: rancher/hardened-containerd:${{ env.TAG }}-amd64-windows
         format: 'table'