[tekton] add image-digest to sast-unicode-check

This commits reacts to task-sast-unicode-check-oci-ta migration
from 0.2 to 0.3 and adds the now required image-digest to
the sast-unicode-check task

Author: jrvaldes

.tekton/windows-machine-config-operator-bundle-release-4.19-pull-request.yaml

@@ -412,6 +412,8 @@ spec:
       workspaces: []
     - name: sast-unicode-check
       params:
+        - name: image-digest
+          value: $(tasks.build-container.results.IMAGE_DIGEST)
         - name: image-url
           value: $(tasks.build-container.results.IMAGE_URL)
         - name: SOURCE_ARTIFACT

.tekton/windows-machine-config-operator-bundle-release-4.19-push.yaml

@@ -409,6 +409,8 @@ spec:
       workspaces: []
     - name: sast-unicode-check
       params:
+        - name: image-digest
+          value: $(tasks.build-container.results.IMAGE_DIGEST)
         - name: image-url
           value: $(tasks.build-container.results.IMAGE_URL)
         - name: SOURCE_ARTIFACT

.tekton/windows-machine-config-operator-release-4.19-pull-request.yaml

@@ -408,6 +408,8 @@ spec:
       workspaces: []
     - name: sast-unicode-check
       params:
+        - name: image-digest
+          value: $(tasks.build-container.results.IMAGE_DIGEST)
         - name: image-url
           value: $(tasks.build-container.results.IMAGE_URL)
         - name: SOURCE_ARTIFACT

.tekton/windows-machine-config-operator-release-4.19-push.yaml

@@ -405,6 +405,8 @@ spec:
       workspaces: []
     - name: sast-unicode-check
       params:
+        - name: image-digest
+          value: $(tasks.build-container.results.IMAGE_DIGEST)
         - name: image-url
           value: $(tasks.build-container.results.IMAGE_URL)
         - name: SOURCE_ARTIFACT