Update docker.io/woodpeckerci/plugin-trivy Docker tag to v1.6.0 (#6699)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: 6543 <6543@obermui.de>

.woodpecker/securityscan.yaml

@@ -5,7 +5,7 @@ when:
       - ${CI_REPO_DEFAULT_BRANCH}
 
 variables:
-  - &trivy_plugin docker.io/woodpeckerci/plugin-trivy:1.5.0
+  - &trivy_plugin docker.io/woodpeckerci/plugin-trivy:1.6.0
 
 steps:
   backend:
@@ -35,7 +35,6 @@ services:
   server:
     image: *trivy_plugin
     settings:
-      service: true
       db-repository: mirror.gcr.io/aquasec/trivy-db:2
     ports:
       - 10000