chore(deps): update quay.io/konflux-ci/mobster docker digest to 1b6a968

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Author: red-hat-konflux[bot]

.tekton/build-dm-verity-image-debug.yaml

@@ -571,7 +571,7 @@ spec:
         - mountPath: /activation-key
           name: activation-key
     - name: sbom-generate
-      image: quay.io/konflux-ci/mobster@sha256:45298b363ff4b96a084bf77a627b3e23471dcfb821eab55a3fa49a60f0ac43f3
+      image: quay.io/konflux-ci/mobster@sha256:1b6a968fcec6520875a7ba28587959e5ae66b3c518fb94bd8ae9d8484af4120b
       script: |
         #!/bin/bash
         set -euo pipefail