Updates tekton PAC definitions

Signed-off-by: chiragkyal <[email protected]>

Author: chiragkyal

.tekton/fbc-build-pipeline.yaml

@@ -276,8 +276,10 @@ spec:
             - "false"
     - name: apply-tags
       params:
-        - name: IMAGE
+        - name: IMAGE_URL
           value: $(tasks.build-image-index.results.IMAGE_URL)
+        - name: IMAGE_DIGEST
+          value: $(tasks.build-image-index.results.IMAGE_DIGEST)
       runAfter:
         - build-image-index
       taskRef: