Add trusted task rule data to allow konflux-ci/tekton-catalog

Add a new rule data file `data/trusted_task_rules.yaml` with an allow
rule that trusts all tasks from oci://quay.io/konflux-ci/tekton-catalog/

Ref: https://issues.redhat.com/browse/EC-1539
Assisted-by: Cursor (using claude-4.5-sonnet)

Author: Acepresso

data/trusted_task_rules.yaml

@@ -0,0 +1,4 @@
+trusted_task_rules:
+  allow:
+    - name: Implicitly trust all tasks from konflux-ci/tekton-catalog
+      pattern: oci://quay.io/konflux-ci/tekton-catalog/*