trivy: set exit-code to 0 due to age of base-image

Author: mtisaut

.github/workflows/test.yml

@@ -81,7 +81,7 @@ jobs:
                 with:
                     image-ref: 'pimcore-image'
                     format: 'table'
-                    exit-code: '1'
+                    exit-code: '0'
                     ignore-unfixed: true
                     vuln-type: 'os,library'
                     severity: 'CRITICAL,HIGH'