Bump aquasecurity/trivy-action from 0.30.0 to 0.31.0

Bumps [aquasecurity/trivy-action](https://github.com/aquasecurity/trivy-action) from 0.30.0 to 0.31.0.
- [Release notes](https://github.com/aquasecurity/trivy-action/releases)
- [Commits](aquasecurity/trivy-action@0.30.0...0.31.0)

---
updated-dependencies:
- dependency-name: aquasecurity/trivy-action
  dependency-version: 0.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
           TAG=${{ env.TAG }}
 
     - name: Run Trivy vulnerability scanner
-      uses: aquasecurity/trivy-action@0.30.0
+      uses: aquasecurity/trivy-action@0.31.0
       with:
         image-ref: rancher/hardened-k8s-metrics-server:${{ env.TAG }}-amd64
         ignore-unfixed: true