Bump aquasecurity/trivy-action from 0.14.0 to 0.15.0 (#1338)

Bumps [aquasecurity/trivy-action](https://github.com/aquasecurity/trivy-action) from 0.14.0 to 0.15.0.
- [Release notes](https://github.com/aquasecurity/trivy-action/releases)
- [Commits](aquasecurity/trivy-action@2b6a709...22d2755)

---
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/ci.yml

@@ -313,7 +313,7 @@ jobs:
             NGINX_CONF_DIR=internal/mode/static/nginx/conf
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@2b6a709cf9c4025c5438138008beaddbb02086f0 # 0.14.0
+        uses: aquasecurity/trivy-action@22d2755f774d925b191a185b74e782a4b0638a41 # 0.15.0
         continue-on-error: true
         with:
           image-ref: ghcr.io/nginxinc/nginx-gateway-fabric${{ matrix.container == 'nginx' && '/nginx' || '' }}:${{ steps.meta.outputs.version }}

.github/workflows/update-docker-images.yml

@@ -123,7 +123,7 @@ jobs:
             NGINX_CONF_DIR=internal/mode/static/nginx/conf
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@2b6a709cf9c4025c5438138008beaddbb02086f0 # 0.14.0
+        uses: aquasecurity/trivy-action@22d2755f774d925b191a185b74e782a4b0638a41 # 0.15.0
         continue-on-error: true
         with:
           image-ref: ghcr.io/nginxinc/nginx-gateway-fabric/nginx:${{ needs.variables.outputs.ngf_tag }}