chore: Bump aquasecurity/trivy-action from 0.27.0 to 0.28.0

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@5681af8...915b19b)

---
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/scan-vulns.yaml

@@ -55,7 +55,7 @@ jobs:
           version: ${{ env.TRIVY_VERSION }}
 
       - name: Run trivy on git repository
-        uses: aquasecurity/trivy-action@5681af892cd0f4997658e2bacc62bd0a894cf564 # 0.27.0
+        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # 0.28.0
         with:
           scan-type: 'fs'
           scan-ref: '.'
@@ -69,23 +69,23 @@ jobs:
           make e2e-build-crd-image
       
       - name: Run Trivy vulnerability scanner on localbuild:test
-        uses: aquasecurity/trivy-action@5681af892cd0f4997658e2bacc62bd0a894cf564 # 0.27.0
+        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # 0.28.0
         with:
           scan-type: 'image'
           image-ref: 'localbuild:test'
           ignore-unfixed: true
           version: ${{ env.TRIVY_VERSION }}
 
       - name: Run Trivy vulnerability scanner on localbuildcrd:test
-        uses: aquasecurity/trivy-action@5681af892cd0f4997658e2bacc62bd0a894cf564 # 0.27.0
+        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # 0.28.0
         with:
           scan-type: 'image'
           image-ref: 'localbuildcrd:test'
           ignore-unfixed: true
           version: ${{ env.TRIVY_VERSION }}
 
       - name: Run Trivy vulnerability scanner on localbuild:test and exit on HIGH severity
-        uses: aquasecurity/trivy-action@5681af892cd0f4997658e2bacc62bd0a894cf564 # 0.27.0
+        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # 0.28.0
         with:
           scan-type: 'image'
           image-ref: 'localbuild:test'
@@ -95,7 +95,7 @@ jobs:
           version: ${{ env.TRIVY_VERSION }}
 
       - name: Run Trivy vulnerability scanner on localbuildcrd:test and exit on HIGH severity
-        uses: aquasecurity/trivy-action@5681af892cd0f4997658e2bacc62bd0a894cf564 # 0.27.0
+        uses: aquasecurity/trivy-action@915b19bbe73b92a6cf82a1bc12b087c9a19a5fe2 # 0.28.0
         with:
           scan-type: 'image'
           image-ref: 'localbuildcrd:test'