ROX-20750: Onboard scanner-db-slim to Konflux (#1436)

Co-authored-by: red-hat-konflux[bot] <126015336+red-hat-konflux[bot]@users.noreply.github.com>
Co-authored-by: red-hat-konflux <rhtap@redhat.com>
Co-authored-by: Misha Sugakov <537715+msugakov@users.noreply.github.com>

.tekton/scanner-db-pull-request.yaml

@@ -43,6 +43,8 @@ spec:
       value: ''
     - name: build-source-image
       value: 'true'
+    - name: build-target-stage
+      value: scanner-db
 
   workspaces:
     - name: workspace
@@ -271,6 +273,8 @@ spec:
             value: $(params.image-expires-after)
           - name: COMMIT_SHA
             value: $(tasks.clone-repository.results.commit)
+          - name: TARGET_STAGE
+            value: scanner-db
         runAfter:
           - prefetch-dependencies
           - fetch-sql-definitions

.tekton/scanner-db-push.yaml

@@ -41,6 +41,8 @@ spec:
       value: ''
     - name: build-source-image
       value: 'true'
+    - name: build-target-stage
+      value: scanner-db
 
   workspaces:
     - name: workspace
@@ -269,6 +271,8 @@ spec:
             value: $(params.image-expires-after)
           - name: COMMIT_SHA
             value: $(tasks.clone-repository.results.commit)
+          - name: TARGET_STAGE
+            value: $(params.build-target-stage)
         runAfter:
           - prefetch-dependencies
           - fetch-sql-definitions