Use consumer name and branch to specify Pact to test

`--url` unavoidably pulls in extra pacts

`--webhook-callback-url` doesn't exist on the published image

#patch

.github/workflows/pact-provider-verification.yml

@@ -29,7 +29,8 @@ jobs:
             --publish \
             --user=admin \
             --password=${{ secrets.PACT_BROKER_PASSWORD }} \
-            --url=${{ github.event.client_payload.pact_url }}
+            --filter-consumer=${{ github.event.client_payload.pact_consumer_name }} \
+            --consumer-version-selectors='{\"branch\":\"${{ github.event.client_payload.pact_consumer_branch }}\"}'
       - name: Verify pacts, including pending
         if: ${{ github.event_name == 'push' }}
         run: |