fix: 🐛 Skip .cache directories in trivy tests

mentioned in merge request gcp-pubsub-to-ms-teams!129 (merged)

mentioned in merge request ucam-minimal-gcp-monitoring!45 (merged)

mentioned in merge request gcp-function!105 (merged)

mentioned in merge request gcp-monitoring!58 (merged)

mentioned in merge request gcp-scheduled-script!122 (merged)

mentioned in merge request gcp-alert-to-gitlab-issue!34 (merged)

mentioned in merge request ucam-gcp-secret!101 (merged)

mentioned in merge request gcp-cloud-run-function!80 (merged)

mentioned in merge request gcp-container-image-mirror!101 (merged)

mentioned in merge request gcp-site-monitoring!137 (merged)

mentioned in merge request gcp-cloud-run-app!167

mentioned in merge request gcp-secret-manager!106 (merged)

mentioned in merge request ucam-faas-long!101 (merged)

mentioned in merge request gke-cluster!127 (merged)

mentioned in merge request ucam-faas!147 (merged)

mentioned in merge request gcp-alert-snooze!130 (merged)

mentioned in merge request ucam-observe-remote-server!88 (merged)

mentioned in merge request gcp-notification-to-gitlab-issue!120