chore: Konflux Migration for Buildah 0.2

In preparation of the buidah 0.2 task, remove references to
`BASE_IMAGES_DIGESTS`. This will be removed as an emitted result.
Existing tasks that previously depend on this result no longer require
this value.

Author: adambkaplan

.tekton/source-to-image-pull-request.yaml

@@ -252,8 +252,6 @@ spec:
       params:
       - name: BINARY_IMAGE
         value: $(params.output-image)
-      - name: BASE_IMAGES
-        value: $(tasks.build-container.results.BASE_IMAGES_DIGESTS)
       runAfter:
       - build-container
       taskRef:
@@ -279,8 +277,6 @@ spec:
         workspace: workspace
     - name: deprecated-base-image-check
       params:
-      - name: BASE_IMAGES_DIGESTS
-        value: $(tasks.build-container.results.BASE_IMAGES_DIGESTS)
       - name: IMAGE_URL
         value: $(tasks.build-container.results.IMAGE_URL)
       - name: IMAGE_DIGEST

.tekton/source-to-image-push.yaml

@@ -249,8 +249,6 @@ spec:
       params:
       - name: BINARY_IMAGE
         value: $(params.output-image)
-      - name: BASE_IMAGES
-        value: $(tasks.build-container.results.BASE_IMAGES_DIGESTS)
       runAfter:
       - build-container
       taskRef:
@@ -276,8 +274,6 @@ spec:
         workspace: workspace
     - name: deprecated-base-image-check
       params:
-      - name: BASE_IMAGES_DIGESTS
-        value: $(tasks.build-container.results.BASE_IMAGES_DIGESTS)
       - name: IMAGE_URL
         value: $(tasks.build-container.results.IMAGE_URL)
       - name: IMAGE_DIGEST